Mitsubishi Electric PURY-M200YNW-A1 Service Handbook
  1. Manuals
  2. Brands
  3. Mitsubishi Electric Manuals
  4. Air Conditioner
  5. City Multi PURY-M200YNW-A1
  6. Service handbook

Mitsubishi Electric PURY-M200YNW-A1 Service Handbook

Hide thumbs Also See for PURY-M200YNW-A1:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503

Quick Links

loading

Related Manuals for Mitsubishi Electric PURY-M200YNW-A1

Summary of Contents for Mitsubishi Electric PURY-M200YNW-A1

  • Page 2 It may also be in violation of applicable laws. Doing so may result in electric shock, malfunction, or fire. MITSUBISHI ELECTRIC CORPORATION cannot be held responsible for malfunctions or accidents result- Do not touch the refrigerant pipes and re- ing from the use of the wrong type of refrigerant.
  • Page 3 Periodically check the unit base for dam- When installing an HBC, take safety mea- age. sures in accordance with the European Standard, based on the system refrigerant If the damage is left uncorrected, the unit will fall and amount and the room volume as shown in cause serious injury.
  • Page 4 Observe the restrictions on the maximum weight that a person can lift, which is spec- ified in local regulations. Failure to do so may result in injury. [3] Installation Installation Do not install the unit where combustible If the air conditioner is installed in a small gas may leak.
  • Page 5 When installing or relocating the unit, do Have a fire extinguisher nearby before braz- not allow air or any substance other than ing work. the specified refrigerant to enter the refrig- If the refrigerant leaks while brazing work is being per- erant lines.
  • Page 6 Relocation and Repairs Only qualified personnel must relocate or Check for refrigerant leaks before service. repair the unit. Do not attempt to disassem- If the refrigerant leaks, fire may result. ble or alter the unit. Do not open the control box cover when re- Failure to do so will result in refrigerant leakage, water covering, charging, or purging refrigerant.
  • Page 7 Use the following tools specifically de- This appliance is intended to be used by ex- signed for use with the specified refriger- pert or trained users in shops, in light indus- ant: Gauge manifold, charge hose, gas leak try and on farms, or for commercial use by detector, check valve, refrigerant charge lay persons.

  • Page 8: Table Of Contents

    CONTENTS Chapter 1 Check Before Servicing Preparation for Piping Work........................1 Handling and Characteristics of Piping Materials, Refrigerant, and Refrigerant Oil ....... 3 Working with Refrigerant Piping......................14 Precautions for Wiring ......................... 19 Cautionary notes on installation environment and maintenance............ 21 Chapter 2 Restrictions System Configurations ..........................
  • Page 9 CONTENTS Chapter 7 Troubleshooting Using Error Codes Error Code and Preliminary Error Code Lists ..................1 Error Code Definitions and Solutions: Codes [0 - 999]............... 8 Error Code Definitions and Solutions: Codes [1000 - 1999]............. 11 Error Code Definitions and Solutions: Codes [2000 - 2999]............. 15 Error Code Definitions and Solutions: Codes [3000 - 3999].............

  • Page 10: Chapter 1 Check Before Servicing

    Chapter 1 Check Before Servicing Preparation for Piping Work ........................ 1 1-1-1 Read before Servicing ..........................1 1-1-2 Tool Preparation ............................. 2 Handling and Characteristics of Piping Materials, Refrigerant, and Refrigerant Oil...... 3 1-2-1 Piping Materials ............................3 1-2-2 Storage of Piping Materials........................4 1-2-3 Pipe Processing ............................
  • Page 11 GB_BS_01_L...

  • Page 12: Preparation For Piping Work

    [1-1 Preparation for Piping Work ] Preparation for Piping Work 1 Check Before Servicing 1-1-1 Read before Servicing 1. Check the type of refrigerant used in the system to be serviced. Refrigerant Type Multi air conditioner for building application CITY MULTI:R32 2.

  • Page 13: Tool Preparation

    [1-1 Preparation for Piping Work ] 1-1-2 Tool Preparation Prepare the following tools and materials necessary for installing and servicing the unit. Tools for use with R32 (Adaptability of tools that are for use with R410A, R22, or R407C) 1. To be used exclusively with R32 (not to be used if used with R410A, R22, or R407C) Tools/Materials Notes Gauge Manifold...

  • Page 14: Handling And Characteristics Of Piping Materials, Refrigerant, And Refrigerant Oil

    [1-2 Handling and Characteristics of Piping Materials, Refrigerant, and Refrigerant Oil ] Handling and Characteristics of Piping Materials, Refrigerant, and Refrigerant Oil 1-2-1 Piping Materials Do not use the existing piping! 1. Copper pipe materials O-material (Annealed) Soft copper pipes (annealed copper pipes). They can easily be bent with hands. 1/2H-material (Drawn) Hard copper pipes (straight pipes).

  • Page 15: Storage Of Piping Materials

    [1-2 Handling and Characteristics of Piping Materials, Refrigerant, and Refrigerant Oil ] 1-2-2 Storage of Piping Materials 1. Storage location Store the pipes to be used indoors. (Warehouse at site or owner's warehouse) If they are left outdoors, dust, dirt, or moisture may infiltrate and contaminate the pipe. 2.

  • Page 16: Differences In Refrigerant Properties

    [1-2 Handling and Characteristics of Piping Materials, Refrigerant, and Refrigerant Oil ] 1-2-4 Differences in Refrigerant Properties 1. Chemical property Refrigerant R32 is as low in toxicity and slightly flammable refrigerant. However, because the specific gravity of vapor refrigerant is greater than that of air, leaked refrigerant in a closed room will accumulate at the bottom of the room and may cause hypoxia.

  • Page 17: Precautions For Handling Equipment Using R32

    [1-2 Handling and Characteristics of Piping Materials, Refrigerant, and Refrigerant Oil ] 1-2-5 Precautions for handling equipment using R32 When handling the units that use R32 refrigerant, observe the following notes. (The notes are based on the precautions re- garding R32 refrigerant contained in IEC 60335-2-40.) 1.
  • Page 18 Where electrical components are being changed, they shall be fit for the purpose and to the correct specification. At all times the MITSUBISHI ELECTRIC's Installation Manual and Service Handbook shall be followed. If in doubt, consult the dealer's technical department for assistance.
  • Page 19 5) Pump down refrigerant system, if possible. 6) Make sure that cylinder is situated on the scales before recovery takes place. 7) Start the recovery machine and operate in accordance with MITSUBISHI ELECTRIC's instructions. 8) Do not overfill cylinders. (No more than 80% volume liquid charge) 9) Do not exceed the maximum working pressure of the cylinder, even temporarily.
  • Page 20 [1-2 Handling and Characteristics of Piping Materials, Refrigerant, and Refrigerant Oil ] 10. Appropriate refrigerant recovery method 1) When removing refrigerant from a system, either for repairing or decommissioning, it is recommended good practice that all refrigerants are removed safely. 2) When transferring refrigerant into cylinders, ensure that only appropriate refrigerant recovery cylinders are employed.
  • Page 21 [1-2 Handling and Characteristics of Piping Materials, Refrigerant, and Refrigerant Oil ] Repair 1) Portable equipment shall be repaired outside or in a workshop specially equipped for servicing units with slightly flammable refrigerants. 2) Ensure sufficient ventilation at the repair place. 3) Be aware that malfunction of the equipment may be caused by refrigerant loss and a refrigerant leak is possible.
  • Page 22 [1-2 Handling and Characteristics of Piping Materials, Refrigerant, and Refrigerant Oil ] 12. Installation restrictions for outdoor units Do not install the unit where combustible gas may leak. - If combustible gas accumulates around the unit, fire or explosion may result. •...
  • Page 23 [1-2 Handling and Characteristics of Piping Materials, Refrigerant, and Refrigerant Oil ] C: Create an appropriate ventilation open area. Good Longitudinal direction Opening: • Must occupy 80% of the longitudinal side of a space. • Must have an opening ratio of Height of an opening ≥...

  • Page 24: Refrigerant Oil

    [1-2 Handling and Characteristics of Piping Materials, Refrigerant, and Refrigerant Oil ] 1-2-6 Refrigerant Oil 1. Refrigerating machine oil in the HFC refrigerant system HFC type refrigerants use a refrigerating machine oil different from that used in the R22 system. Note that the ester oil used in the system has properties that are different from commercially available ester oil.

  • Page 25: Working With Refrigerant Piping

    [1-3 Working with Refrigerant Piping ] Working with Refrigerant Piping 1-3-1 Pipe Brazing Perform brazing with special care to keep foreign objects (such as oxide scale, copper powder, water, and dust) out of the refrig- erant system. Example: Inside the brazed connection Use of no inert gas during brazing Use of inert gas during brazing 1.

  • Page 26: Air Tightness Test

    [1-3 Working with Refrigerant Piping ] 1-3-2 Air Tightness Test No changes have been made in the detection method. Note that a refrigerant leak detector for R22 will not detect an R32 leak. Halide torch R22 leakage detector 1. Items to be strictly observed Pressurize the equipment with nitrogen up to the design pressure (4.15MPa[601psi]), and then judge the equipment's air tight- ness, taking temperature variations into account.

  • Page 27: Vacuum Drying

    [1-3 Working with Refrigerant Piping ] 1-3-3 Vacuum Drying (Photo1) 15010H (Photo2) 14010 Recommended vacuum gauge: ROBINAIR 14010 Thermistor Vacuum Gauge 1. Vacuum pump with a reverse-flow check valve (Photo1) To prevent the vacuum pump oil from flowing into the refrigerant circuit during power OFF or power failure, use a vacuum pump with a reverse-flow check valve.
  • Page 28 [1-3 Working with Refrigerant Piping ] 6. Special vacuum drying When 5Torr(650Pa) or lower degree of vacuum cannot be attained after 3 hours of evacuation, it is likely that water has pen- etrated the system or that there is a leak. If water infiltrates the system, break the vacuum with nitrogen.

  • Page 29: Refrigerant Charging

    [1-3 Working with Refrigerant Piping ] 1-3-4 Refrigerant Charging Cylinder with a siphon Cylinder without a siphon Cylin- Cylin- Cylinder color R32 is light blue. Refrigerant charging in the liquid state Valve Valve liquid liquid 1. Reasons R32 is a single refrigerant with a boiling point of -52°C (-62°F) and can be handled in a similar manner as with other single refrigerants, such as R22.

  • Page 30: Precautions For Wiring

    [1-4 Precautions for Wiring ] Precautions for Wiring Control boxes house high-voltage and high-temperature electrical parts. They may still remain energized or hot after the power is turned off. When opening or closing the front cover of the control box, keep out of contact with the internal parts. Before inspecting the inside of the control box, turn off the power, leave the unit turned off for at least 10 minutes, and check that the voltage across pins 1 and 5 of connector RYPN has dropped to 20 VDC or less.
  • Page 31 [1-4 Precautions for Wiring ] 2) Check the wires are securely fastened to the screw terminals. Screw the screws straight down so as not to damage the screw threads. Hold the two round terminals back to back to ensure that the screw will screw down straight. After tightening the screw, mark a line through the screw head, washer, and terminals with a permanent marker.

  • Page 32: Cautionary Notes On Installation Environment And Maintenance

    [1-5 Cautionary notes on installation environment and maintenance ] Cautionary notes on installation environment and maintenance Salt-resistant unit is resistant to salt corrosion, but not salt-proof. Please note the following when installing and maintaining outdoor units in marine atmosphere. 1) Install the salt-resistant unit out of direct exposure to sea breeze, and minimize the exposure to salt water mist. 2) Avoid installing a sun shade over the outdoor unit, so that rain will wash away salt deposits off the unit.
  • Page 33 [1-5 Cautionary notes on installation environment and maintenance ] 22 - chapter 1 BS_01_L...

  • Page 34: Chapter 2 Restrictions

    Chapter 2 Restrictions System Configurations......................... 1 Types and Maximum Allowable Length of Cables................2 Switch Settings ............................. 3 M-NET Address Settings ........................4 2-4-1 Address Settings List ..........................4 2-4-2 Outdoor Unit Power Jumper Connector Connection................5 2-4-3 Outdoor Unit Centralized Controller Switch Setting ................5 2-4-4 Room Temperature Detection Position Selection ...................
  • Page 35 GB_BS_02_L...

  • Page 36: System Configurations

    [2-1 System Configurations ] System Configurations 2 Restrictions 1. Table of compatible indoor units The table below summarizes the types of indoor units that are compatible with different types of outdoor units. (1) Standard combinations Maximum Maximum total Maximum Number of Types of number of capacity of...

  • Page 37: Types And Maximum Allowable Length Of Cables

    [2-2 Types and Maximum Allowable Length of Cables ] Types and Maximum Allowable Length of Cables 1. Wiring work (1) Notes 1) Have all electrical work performed by an authorized electrician according to the local regulations and instructions in this man- ual.

  • Page 38: Switch Settings

    [2-3 Switch Settings ] 2) Remote controller wiring MA remote controller ME remote controller Type VCTF, VCTFK, CVV, CVS, VVR, VVF, VCT Shielded cables CVVS, CPEVS, and MVVS Number of 2-core cable 2-core cable cores Cable type 2 *3 0.3 to 1.25mm 2 *3 *5 0.3 to 1.25mm Cable size...

  • Page 39: M-Net Address Settings

    [2-4 M-NET Address Settings ] M-NET Address Settings 2-4-1 Address Settings List 1. M-NET Address settings (1) Address settings table The need for address settings and the range of address setting depend on the configuration of the system. Unit or controller Sym- Address Setting method...

  • Page 40: Outdoor Unit Power Jumper Connector Connection

    [2-4 M-NET Address Settings ] Unit or controller Sym- Address Setting method Factory setting address range setting System con- Group remote control- 201 to 250 Assign an address that equals the sum of the smallest group troller number of the group to be controlled and 200. System remote con- Assign an arbitrary but unique address within the range listed troller...

  • Page 41: Room Temperature Detection Position Selection

    [2-4 M-NET Address Settings ] 2-4-4 Room Temperature Detection Position Selection To stop the fan during heating Thermo-OFF (SW1-7 and 1-8 on the indoor units to be set to ON), use the built-in thermistor on the remote controller or an optional thermistor. 1) To use the built-in sensor on the remote controller, set the SW1-1 to ON.

  • Page 42: Various Control Methods Using The Signal Input/Output Connector On Outdoor Unit

    [2-4 M-NET Address Settings ] 2-4-7 Various Control Methods Using the Signal Input/Output Connector on Outdoor Unit (1) Various connection options Terminal Type Usage Function to be Option used Input Prohibiting cooling/heating operation (thermo OFF) by an external DEMAND (level) CN3D Adapter for input to the outdoor unit.
  • Page 43 [2-4 M-NET Address Settings ] (2) Example of wiring connection CAUTION 1) Wiring should be covered by insulation tube with supplementary insulation. 2) Use relays or switches with IEC or equivalent standard. 3) The electric strength between accessible parts and control circuit should have 2750V or more. (1) CN51 (2) CN3S Outdoor unit...

  • Page 44: Demand Control Overview

    [2-5 Demand Control Overview ] Demand Control Overview (1) General outline of control Demand control is performed by using the external signal input to the 1-2 and 1-3 pins of CN3D on the outdoor unit (OC). Between 2 and 4 steps of demand control is possible by setting Dip SW6-8 on the outdoor unit (OC). Dip SW6-8 Demand control switch Input to CN3D*...

  • Page 45: System Connection Example

    [2-6 System Connection Example ] System Connection Example Examples of typical system connection are shown below. Refer to the Installation Manual that came with each device or controller for details. (1) An example of a system to which an MA remote controller is connected System Address start up for in- Connection to the system controller...

  • Page 46: Example System With An Ma Remote Controller

    [2-7 Example System with an MA Remote Controller ] Example System with an MA Remote Controller 2-7-1 Single Refrigerant System (Automatic Indoor/Outdoor Address Startup) (1) Sample control wiring Interlock operation with the ventilation unit Leave the male Group Group connector on CN41 as it is.
  • Page 47 [2-7 Example System with an MA Remote Controller ] When 2 remote controllers are connected to the system, (4) Wiring method connect terminals 1 and 2 of the terminal block (TB15) on 1) Indoor/outdoor transmission line the indoor unit (IC) to the terminal block on the two MA remote controllers.

  • Page 48: Single Refrigerant System

    [2-7 Example System with an MA Remote Controller ] 2-7-2 Single Refrigerant System (1) Sample control wiring Interlock operation with the ventilation unit Leave the male Group Group connector on CN41 as it is. SW5-1 OFF TB15 TB15 M1M2 M1M2 M1M2 M1 M2 M1 M2...
  • Page 49 [2-7 Example System with an MA Remote Controller ] and HS, and the S terminal of the terminal block (TB5) on (4) Wiring method the indoor unit (IC) with the shield of the shielded cable. 1) Indoor/outdoor transmission line 2) Transmission line for centralized control Daisy-chain terminals M1 and M2 of the terminal block No connection is required.

  • Page 50: Grouped Operation Of Units In Separate Refrigerant Circuits

    [2-7 Example System with an MA Remote Controller ] 2-7-3 Grouped Operation of Units in Separate Refrigerant Circuits (1) Sample control wiring Interlock operation with the ventilation unit Move the male connector from CN41 to CN40. Group Group Group SW5-1 OFF TB15 TB15 TB15...
  • Page 51 [2-7 Example System with an MA Remote Controller ] Only use shielded cables. (4) Wiring method Shielded cable connection 1) Indoor/outdoor transmission line Daisy-chain the S terminal on the terminal block (TB7) on the outdoor unit (OC) with the shield wire of the shielded ca- Same as 2-7-2 ble.

  • Page 52: System With A Connection Of System Controller To Centralized Control Transmission Line

    [2-7 Example System with an MA Remote Controller ] 2-7-4 System with a Connection of System Controller to Centralized Control Transmission Line (1) Sample control wiring An example of a system in which a system controller is connected to the transmission cable for the centralized control system and the power is supplied from the outdoor unit Interlock operation with the ventilation unit...
  • Page 53 [2-7 Example System with an MA Remote Controller ] (4) Wiring method a) When connecting TB7, only commence after checking that 1) Indoor/outdoor transmission line the voltage is below 20 VDC. Same as 2-7-2 Only use shielded cables. Only use shielded cables. Shielded cable connection Shielded cable connection Daisy-chain the S terminal of the terminal block (TB7) on the...

  • Page 54: System With A Connection Of System Controller To Indoor-Outdoor Transmission Line

    [2-7 Example System with an MA Remote Controller ] 2-7-5 System with a Connection of System Controller to Indoor-Outdoor Transmission Line (1) Sample control wiring Interlock operation with the ventilation unit CN41 CN40 Replace SW5-1 OFF ON Group Group Group TB15 TB15 TB15...
  • Page 55 [2-7 Example System with an MA Remote Controller ] Set the central control switch (SW5-1) on the control board of all out- (4) Wiring method door units to "ON." 1) Indoor/outdoor transmission line Daisy-chain terminals M1 and M2 of the terminal block for indoor- a) When connecting TB7, only commence after checking that the volt- outdoor transmission line (TB3) on the outdoor unit (OC), of the ter- age is below 20 VDC.

  • Page 56: System With Multiple Hbcs

    [2-7 Example System with an MA Remote Controller ] 2-7-6 System with Multiple HBCs (1) Sample control wiring Move the male connector from CN41 to CN40 SW5-1 OFF ON Group Group Group Group TB15 TB15 TB15 TB15 TB15 TB15 TB15 M1M2 M1M2 M1M2...
  • Page 57 [2-7 Example System with an MA Remote Controller ] only one of the outdoor units. (4) Wiring method When connecting a system controller, set the centralized 1) Indoor/outdoor transmission line control switch (SW5-1) on the control board of all indoor units to "ON."...
  • Page 58 [2-7 Example System with an MA Remote Controller ] (5) Address setting method Pro- Fac- Address tory Unit or controller setting Setting method Notes set- range ting Indoor Main unit IC 01 to 50 Port number setting is re- Assign the smallest address to the main unit in the group.

  • Page 59: Example System With An Me Remote Controller

    [2-8 Example System with an ME Remote Controller ] Example System with an ME Remote Controller 2-8-1 System with a Connection of System Controller to Centralized Control Transmission Line (1) Sample control wiring Interlock operation with the ventilation unit Move the male connector from CN41 to CN40.
  • Page 60 [2-8 Example System with an ME Remote Controller ] When 2 remote controllers are connected to the sys- (4) Wiring method 1) Indoor/outdoor transmission line Refer to the section on Switch Setting. Same as 2-7-2 Performing a group operation (including the group operation of units in different refrigerant circuits).

  • Page 61: Example System With An Ma And An Me Remote Controller

    [2-9 Example System with an MA and an ME Remote Controller ] Example System with an MA and an ME Remote Controller 2-9-1 System with a Connection of System Controller to Centralized Control Transmission Line (1) Sample control wiring Move the male connector from CN41 to CN40.
  • Page 62 [2-9 Example System with an MA and an ME Remote Controller ] Shielded cable connection (3) Maximum allowable length Same as 2-7-2 1) Indoor/outdoor transmission line 2) Transmission line for centralized control Same as 2-7-3 Same as 2-7-4 2) Transmission line for centralized control Shielded cable connection Same as 2-7-4 Same as 2-7-4...
  • Page 63 [2-9 Example System with an MA and an ME Remote Controller ] (5) Address setting method Fac- Pro- dress tory Unit or controller Setting method Notes setting set- dures range ting Opera- Main 01 to Assign the smallest address to Assign an address smaller than that of the main unit in the group.

  • Page 64: 2-10 Restrictions On Refrigerant Pipes

    [2-10 Restrictions on Refrigerant Pipes ] 2-10 Restrictions on Refrigerant Pipes 2-10-1 Restrictions on Refrigerant Pipe Length CMB-WM350F-AA + CMB-WM108V-BB × 3 (A) Main-HBC (CMB-WM500F-AA) (CMB-WM1016V-BB) Total indoor units capacity: W/WP/WL170 or less (B), (C), (D) Sub-HBC Total indoor units capacity: W/WP/WL250 or less Branch joint (field supply) HBC (Sub-HBC) HBC (Sub-HBC)

  • Page 65: Restrictions On Refrigerant Pipe And Water Pipe Size

    [2-10 Restrictions on Refrigerant Pipes ] 2-10-2 Restrictions on Refrigerant Pipe and Water Pipe Size (1) Refrigerant pipe between outdoor unit and HBC (Part A) Unit model Model name High pressure side Low pressure side PURY-(E)M200 ø15.88 (Brazing) ø19.05 (Brazing) PURY-(E)M250 ø15.88 (Brazing) ø22.2 (Brazing)

  • Page 66: Hbc Connection Method

    [2-10 Restrictions on Refrigerant Pipes ] 2-10-3 HBC Connection Method (1) Size of the pipe that fits the standard HBC ports (A) To outdoor unit (B) End connection (brazing) (C) Main-HBC (D) Sub-HBC (E) Indoor unit (F) Branch joint (field supply) (G) Up to three units for 1 branch hole;...
  • Page 67 [2-10 Restrictions on Refrigerant Pipes ] Note: 2 Connecting W/WP/WL100 or 125 indoor units to an HBC When connecting W/WP/WL100 or 125 indoor units to an HBC, connect each unit to two sets of two ports on the HBC, using two junction pipes (Y-joints).

  • Page 68: Chapter 3 Major Components, Their Functions And Refrigerant Circuits

    Chapter 3 Major Components, Their Functions and Refrigerant Circuits External Appearance and Refrigerant Circuit Components of Outdoor Unit........1 3-1-1 External Appearance of Outdoor Unit ..................... 1 3-1-2 Outdoor Unit Refrigerant Circuits......................4 Outdoor Unit Refrigerant Circuit Diagrams..................8 Functions of the Major Components of Outdoor Unit..............14 Functions of the Major Components of Indoor Unit................
  • Page 69 GB_BS_03_L...

  • Page 70: External Appearance And Refrigerant Circuit Components Of Outdoor Unit

    [3-1 External Appearance and Refrigerant Circuit Components of Outdoor Unit ] External Appearance and Refrigerant Circuit Components of 3 Major Components, Their Functions and Refrigerant Circuits Outdoor Unit 3-1-1 External Appearance of Outdoor Unit (1) PURY-M200, M250, M300YNW-A1 PURY-EM200, EM250, EM300YNW-A1 Fan guard Fan guard Front panel...
  • Page 71 [3-1 External Appearance and Refrigerant Circuit Components of Outdoor Unit ] (2) PURY-M350, M400, M450YNW-A1 PURY-EM350, EM400, EM450YNW-A1 Fan guard Fan guard Fin guard Fin guard Heat exchanger Heat exchanger Rear panel Rear panel Side panel Side panel Internal panel Internal panel Front panel Front panel...
  • Page 72 [3-1 External Appearance and Refrigerant Circuit Components of Outdoor Unit ] (3) PURY-M500YNW-A1 PURY-EM500YNW-A1 Fan guard Fan guard Fin guard Fin guard Side panel Side panel Heat exchanger Heat exchanger Rear panel Rear panel Side panel Side panel Internal panel Internal panel Control box Control box...

  • Page 73: Outdoor Unit Refrigerant Circuits

    [3-1 External Appearance and Refrigerant Circuit Components of Outdoor Unit ] 3-1-2 Outdoor Unit Refrigerant Circuits (1) PURY-M200, M250, M300YNW-A1 PURY-EM200, EM250, EM300YNW-A1 Check valve (CV2a) Check valve Check valve (CV5a) (CV3a) Check valve (CV6a) Solenoid valve (SV1a) High-pressure switch (63H1) Accumulator Low-pressure sensor...
  • Page 74 [3-1 External Appearance and Refrigerant Circuit Components of Outdoor Unit ] (2) PURY-M350, M400, M450YNW-A1 PURY-EM350YNW-A1 Check valve (CV2a) Check valve (CV3a) Check valve (CV5a) Check valve (CV6a) Solenoid valve (SV1a) Linear expansion Accumulator valve (LEV2d) High-pressure Low-pressure sensor switch (63H1) (63LS) High-pressure sensor (63HS1)
  • Page 75 [3-1 External Appearance and Refrigerant Circuit Components of Outdoor Unit ] (3) PURY-EM400, EM450YNW-A1 Check valve (CV2a) Check valve (CV3a) Check valve (CV5a) Check valve (CV6a) Solenoid valve (SV1a) Gas-liquid separator Linear expansion Accumulator valve (LEV2d) High-pressure Low-pressure sensor switch (63H1) (63LS) High-pressure sensor (63HS1)
  • Page 76 [3-1 External Appearance and Refrigerant Circuit Components of Outdoor Unit ] (4) PURY-M500YNW-A1 PURY-EM500YNW-A1 Gas-liquid separator Check valve (CV2b) Check valve High-pressure sensor Linear expansion valve (CV2a) (63HS1) Four-way valve (LEV2c) (21S4a) Four-way valve (21S4c) High-pressure check joint (CJ1) Four-way valve Accumulator High-pressure...

  • Page 77: Outdoor Unit Refrigerant Circuit Diagrams

    [3-2 Outdoor Unit Refrigerant Circuit Diagrams ] Outdoor Unit Refrigerant Circuit Diagrams (1) PURY-M200 - M300YNW-A1 - chapter 3 BS_03_L...
  • Page 78 [3-2 Outdoor Unit Refrigerant Circuit Diagrams ] (2) PURY-EM200 - EM300YNW-A1 BS_03_L chapter 3 -...
  • Page 79 [3-2 Outdoor Unit Refrigerant Circuit Diagrams ] (3) PURY-M350 - M450YNW-A1 - chapter 3 BS_03_L...
  • Page 80 [3-2 Outdoor Unit Refrigerant Circuit Diagrams ] (4) PURY-EM350 - EM450YNW-A1 BS_03_L chapter 3 -...
  • Page 81 [3-2 Outdoor Unit Refrigerant Circuit Diagrams ] (5) PURY-M500YNW-A1 - chapter 3 BS_03_L...
  • Page 82 [3-2 Outdoor Unit Refrigerant Circuit Diagrams ] (6) PURY-EM500YNW-A1 BS_03_L chapter 3 -...

  • Page 83: Functions Of The Major Components Of Outdoor Unit

    [3-3 Functions of the Major Components of Outdoor Unit ] Functions of the Major Components of Outdoor Unit Part Symbols Notes Usage Specifications Check method name (functions) Com- Adjusts the amount of circulating (E)M200 - (E)M350 models pressor (Comp1) refrigerant by adjusting the operat- Low-pressure shell scroll ing frequency based on the oper- compressor...
  • Page 84 [3-3 Functions of the Major Components of Outdoor Unit ] Part Symbols Notes Usage Specifications Check method name (functions) Thermis- Controls defrosting during heating Degrees Celsius Resistance check (Pipe operation = 15k temperature) = 3460 0/80 R = 15 3460 1) Detects outdoor air tempera- (Outdoor tem- ture...

  • Page 85: Functions Of The Major Components Of Indoor Unit

    [3-4 Functions of the Major Components of Indoor Unit ] Functions of the Major Components of Indoor Unit Part Symbol Notes Usage Specification Check method Name (functions) Flow con- Controls the rate of water flow DC12V Refer to the section [8- trol valve to the indoor unit.

  • Page 86: External Appearance And Refrigerant Circuit Components Of Hbc

    [3-5 External Appearance and Refrigerant Circuit Components of HBC ] External Appearance and Refrigerant Circuit Components of 3-5-1 Main HBC 1. External view (1) CMB-WM350,500F-AA To Sub-HBC (Hot water) To Sub-HBC (Cold water) From Sub-HBC (Cold water) From Sub-HBC (Hot water) Low pressure pipe High pressure pipe Expansion Vessel...
  • Page 87 [3-5 External Appearance and Refrigerant Circuit Components of HBC ] 2. Front side 4-way valve (21S4Mb) Cooling-main heat exchanger Heating-main heat exchanger 4-way valve (21S4Ma) LEV3 Pressure sensor (Pw3) Pressure sensor (PS3) 3-way valve LEV2 (MV1) LEV1 Solenoid valve (SV1) Water pressure protection valve Pressure sensor (CPV1)
  • Page 88 [3-5 External Appearance and Refrigerant Circuit Components of HBC ] 4. Front side (bottom) Pressure sensor (Pw4) Pressure sensor (Pw2) 5. Front side (top) Valve block (VB3a) BS_03_L chapter 3 -...

  • Page 89: Sub Hbc

    [3-5 External Appearance and Refrigerant Circuit Components of HBC ] 3-5-2 Sub HBC 1. Front (1) CMB-WM1016V-BB To Main HBC (Hot water) From Main HBC (Hot water) To Main HBC (Cold water) From Main HBC (Cold water) Drain (2) CMB-WM108V-BB To Main HBC (Hot water) From Main HBC (Hot water) To Main HBC (Cold water)
  • Page 90 [3-5 External Appearance and Refrigerant Circuit Components of HBC ] 3. Top side (1) CMB-WM1016V-BB Valve block (VB3f) (2) CMB-WM108V-BB Valve block (VB3e) BS_03_L chapter 3 -...

  • Page 91: Hbc Refrigerant Circuit Diagrams

    [3-6 HBC Refrigerant Circuit Diagrams ] HBC Refrigerant Circuit Diagrams 1. HBC (1) CMB-WM350, 500F-AA - chapter 3 BS_03_L...
  • Page 92 [3-6 HBC Refrigerant Circuit Diagrams ] 2. Sub-HBC (1) CMB-WM108V-BB Sub-HBC water system Valve block Air purge valve VB3a TH31a TH33 VB3b Port TH32 No.1~No.4 TH31b VB3d purge TH31d valve VB3e TH31e VB3f Port No.5~No.8 TH31f VB3h TH31h To Main-HBC (2) CMB-WM1016V-BB Sub-HBC water system Valve block...

  • Page 93: Functions Of The Major Components Of Hbc

    [3-7 Functions of the Major Components of HBC ] Functions of the Major Components of HBC (1) HBC Part name Symbols Notes Usage Specifications Check method Solenoid Refriger- Opens during the cooling mode AC220-240V Continuity check valve ant side and defrost cycle Open when energized/ with a tester closed when de-energized...
  • Page 94 [3-7 Functions of the Major Components of HBC ] Part name Symbols Notes Usage Specifications Check method Pressure Refriger- 1) Detects high pressure Pressure sensor (high pres- ant side 2) LEV control 0~4.15 MPa [601psi] Vout 0.5~3.5V sure side) 1 2 3 0.071V/0.098 MPa [14psi] Pressure [MPa] Con-...
  • Page 95 [3-7 Functions of the Major Components of HBC ] (2) Sub-HBC Part name Symbols Notes Usage Specifications Check method Thermistor TH31a~p Water Indoor unit circulating water con- Same as the table above TH32, 33 side trol Valve VB3a~p Water 1) Switches the water flow path DC12V block side...

  • Page 96: Chapter 4 Electrical Components And Wiring Diagrams

    Chapter 4 Electrical Components and Wiring Diagrams Outdoor Unit Circuit Board Arrangement................... 1 4-1-1 Outdoor Unit Control Box........................1 Outdoor Unit Circuit Board Components ................... 6 4-2-1 Control Board............................6 4-2-2 Power-supply board (PS Board) ......................7 4-2-3 Inverter Board (INV Board) ........................9 4-2-4 Fan Board .............................
  • Page 97 GB_BS_04_L...

  • Page 98: Outdoor Unit Circuit Board Arrangement

    [4-1 Outdoor Unit Circuit Board Arrangement ] Outdoor Unit Circuit Board Arrangement 4 Electrical Components and Wiring Diagrams 4-1-1 Outdoor Unit Control Box Control box houses high-voltage parts. When opening or closing the front panel of the control box, do not let it come into contact with any of the internal components.
  • Page 99 [4-1 Outdoor Unit Circuit Board Arrangement ] MAIN BOX Control board PS board Transmission cable terminal block (TB3, TB7) Ground screw Ground screw Note 1) Note 1) Connector RYPS1 (white 3pin) RYPS2 (white 5pin) RY63H (white 2pin) 1) Leave the grounding connected during maintenance. chapter 4 BS_04_L...
  • Page 100 [4-1 Outdoor Unit Circuit Board Arrangement ] INV BOX Fan board Noise filter Power-supply terminal block INV board RYFAN1 PYPN (1 pin +, 5 pin -) *The figure at left shows the unit seen from the left after the front panel and the left side panel were removed.
  • Page 101 [4-1 Outdoor Unit Circuit Board Arrangement ] (2) PURY-(E)M350, (E)M400, (E)M450YNW-A1 Fan board (right) Noise filter Fan board (left) Control board Power-supply terminal block Capacitor board Capacitor board Connector RYPN (1 pin +, 5 pin -) INV board Transmission cable terminal DC reactor (DCL) Cooling fan block (TB3, TB7)
  • Page 102 [4-1 Outdoor Unit Circuit Board Arrangement ] (3) PURY-(E)M500YNW-A1 Noise filter Fan board (right) Fan board (left) *The figure at left shows the unit seen from the left after the front panel and the left side panel were removed. Control board Power-supply terminal block INV board Connector RYPN...

  • Page 103: Outdoor Unit Circuit Board Components

    [4-2 Outdoor Unit Circuit Board Components ] Outdoor Unit Circuit Board Components 4-2-1 Control Board CNPS CN603 Cooling fan control signal output CN4/4A/4B/4C Abbreviated name 5 VDC output Inverter reset signal output Serial communication Power-supply CN600 of connector color signal output CN601 signal output 9 VDC input...

  • Page 104: Power-Supply Board (Ps Board)

    [4-2 Outdoor Unit Circuit Board Components ] 4-2-2 Power-supply board (PS Board) (1) PURY-(E)M200, (E)M250, (E)M300YNW-A1 CN100 L2-N Voltage input Ground Ground Ground Ground CNFAN2 FAN2INV power-supply output 17 VDC output CNFAN1 FAN1INV power-supply output 17 VDC output CN303 63H pressure switch input/output CNINV COMPINV...
  • Page 105 [4-2 Outdoor Unit Circuit Board Components ] (2) PURY-(E)M350, (E)M400, (E)M500YNW-A1 CN100 L2-N Voltage input Zero-cross output Ground Ground Ground CNFG5 Ground CN300 Booster COMP gate voltage output Ground Ground CNDC MAIN power-supply output 9 VDC output 13 VDC output LED1 Indoor unit system power supply...

  • Page 106: Inverter Board (Inv Board)

    [4-2 Outdoor Unit Circuit Board Components ] 4-2-3 Inverter Board (INV Board) (1) PURY-(E)M200, (E)M250, (E)M300YNW-A1 C700, C701, C705, C706 Smoothing capacitor SC-L2 CN-P, CN-N Input (L2) Connects to connector RYPN SC-P1 SC-L3 DCL terminal Input (L3) CNRY 12 VDC (Power-supply board) SC-L1 SC-PL...
  • Page 107 [4-2 Outdoor Unit Circuit Board Components ] (2) PURY-(E)M350, (E)M400, (E)M450YNW-A1 SC-L1 Input (L1) SC-L2 Input (L2) CNRY 12 VDC GND (Power-supply board) SC-L3 Input (L3) SC-U LED1 Inverter output (U) Lit: Inverter operation Blinking: Inverter error SC-V Inverter output (V) LED4 Lit: Microcomputer is energized.
  • Page 108 [4-2 Outdoor Unit Circuit Board Components ] (3) PURY-(E)M500YNW-A1 LED1 Serial communication signal CN-P, CN-N Lit: Inverter operation R127 Signal input Connects to Blinking: Inverter error Overcurrent GND (MAIN circuit board) connector RYPN LED4 detection CNCTIB Signal output Lit: Microcomputer is energized. resistor DC current sensor input GND (MAIN circuit board)

  • Page 109: Fan Board

    [4-2 Outdoor Unit Circuit Board Components ] 4-2-4 Fan Board LED01 Lit: Inverter operation CNDCP Blinking: Inverter error LED04 Bus voltage input (N) Lit: Microcomputer in operation RSH03 Current detection resistor RSH02 Current detection resistor RSH01 Current detection resistor CN81 17 VDC input CNINV Inverter output...

  • Page 110: Noise Filter

    [4-2 Outdoor Unit Circuit Board Components ] 4-2-5 Noise Filter (1) PURY-(E)M200, (E)M250, (E)M300, (E)M350, (E)M400, (E)M450YNW-A1 Surge absorber circuit Surge absorber circuit Open-phase detection circuit Open-phase detection circuit Ground F1, F2, F3, F4 Fuse 250 VAC 6.3 A TB13 Input (L3) TB12 Input (L2)
  • Page 111 [4-2 Outdoor Unit Circuit Board Components ] (2) PURY-(E)M500YNW-A1 TB12 TB11 Input (L2) Input (L1) Ground TB14 Input (N) F1, F2, F3, F4 Fuse 250 VAC 6.3 A TB13 Input (L3) TB33 (L3) TB32 Surge absorber circuit (L2) Surge absorber circuit Open-phase detection circuit TB31 Open-phase detection circuit...

  • Page 112: Filter Board

    [4-2 Outdoor Unit Circuit Board Components ] 4-2-6 Filter Board (1) PURY-(E)M500YNW-A1 CN1B Input CN1A BS_04_L chapter 4 -...

  • Page 113: Capacitor Board (Cap Board)

    [4-2 Outdoor Unit Circuit Board Components ] 4-2-7 Capacitor Board (CAP Board) (1) PURY-(E)M350, (E)M400, (E)M450YNW-A1 CN-CAP Connects to CAP05Y FT-P1C Connects to CAP05Y C1-C4 Smoothing capacitor 1) When opening or closing the front panel of the control box, do not let it come into contact with any of the internal components. Before inspecting the inside of the control box, turn off the power, keep the unit off for at least 10 minutes, and confirm that the capacitor voltage (inverter main circuit) has dropped to 20 VDC or less.

  • Page 114: Outdoor Unit Electrical Wiring Diagrams

    [4-3 Outdoor Unit Electrical Wiring Diagrams ] Outdoor Unit Electrical Wiring Diagrams (1) PURY-(E)M200, (E)M250, (E)M300YNW-A1 BS_04_L chapter 4 -...
  • Page 115 [4-3 Outdoor Unit Electrical Wiring Diagrams ] (2) PURY-(E)M350, (E)M400, (E)M450YNW-A1 18 - chapter 4 BS_04_L...
  • Page 116 [4-3 Outdoor Unit Electrical Wiring Diagrams ] (3) PURY-(E)M500YNW-A1 BS_04_L chapter 4 -...

  • Page 117: Transmission Booster Electrical Wiring Diagrams

    [4-4 Transmission Booster Electrical Wiring Diagrams ] Transmission Booster Electrical Wiring Diagrams Terminal block for power supply (TB1) 250V 5A Red Red Red Black White White Green/Yellow 220 - 240VAC Varistor Noise filter Black White White White White Varistor Green Black Stabilized power supply Blue...

  • Page 118: Hbc Circuit Board Arrangement

    [4-5 HBC Circuit Board Arrangement ] HBC Circuit Board Arrangement 4-5-1 HBC and Sub-HBC Control Box 1. CMB-WM350, 500F-AA PS board AC reactor (ACL) INV board Control board VB (valve block) board Terminal block for Terminal block for transmission line power supply 2.

  • Page 119: Hbc Circuit Board Components

    [4-6 HBC Circuit Board Components ] HBC Circuit Board Components 4-6-1 HBC and Sub-HBC Circuit Board 1. Control board SW 001, 002, 011 CN703 Dip switch Portable charger SWP 01-03 SWU 01, 02 LD 001 CN991 Push switch Address Maintenance LED Battery box CNUSB USB memory...
  • Page 120 [4-6 HBC Circuit Board Components ] 2. PS board LED 01 Lit: Microcomputer is energized Unlit: Microcomputer is not energized LED 02 Lit: Converter operation F111 FT 001, 002 Blinking: Converter error 15A T Ground ACL terminal F122 3.15A T F110 6.3A T CNAC...
  • Page 121 [4-6 HBC Circuit Board Components ] 3. INV board LED01 Lit: Inverter operation Blinking: Inverter error LED04 SW001 Lit: Microcomputer in operation Address switch DIP IPM (rear) CNDCN Bus voltage input (N) F001 15A T CNINV CNDCP Inverter output Bus voltage input (P) 24 - chapter 4 BS_04_L...
  • Page 122 [4-6 HBC Circuit Board Components ] 4. VB board CN991 Battery box BS_04_L chapter 4 -...
  • Page 123 [4-6 HBC Circuit Board Components ] 5. SUB PS board CNAC L-N Voltage input 6.3A T FT01, 02 Bus voltage measurement point CNFG Ground 26 - chapter 4 BS_04_L...

  • Page 124: Hbc Electrical Wiring Diagrams

    [4-7 HBC Electrical Wiring Diagrams ] HBC Electrical Wiring Diagrams 4-7-1 HBC and Sub-HBC Electrical Wiring Diagrams (1) CMB-WM350, 500F-AA BS_04_L chapter 4 -...
  • Page 125 [4-7 HBC Electrical Wiring Diagrams ] (2) CMB-WM108V-BB model 28 - chapter 4 BS_04_L...
  • Page 126 [4-7 HBC Electrical Wiring Diagrams ] (3) CMB-WM108V-BB model (Detail of X section) BS_04_L chapter 4 -...
  • Page 127 [4-7 HBC Electrical Wiring Diagrams ] (4) CMB-WM1016V-BB model 30 - chapter 4 BS_04_L...
  • Page 128 [4-7 HBC Electrical Wiring Diagrams ] (5) CMB-WM1016V-BB model (Detail of X, Y section) BS_04_L chapter 4 -...
  • Page 129 [4-7 HBC Electrical Wiring Diagrams ] 32 - chapter 4 BS_04_L...

  • Page 130: Chapter 5 Control

    Chapter 5 Control Dipswitch Functions and Factory Settings ..................1 5-1-1 Outdoor Unit Switch Functions and Factory Settings ................1 5-1-2 Indoor Unit Switch Functions and Factory Settings ................6 5-1-3 Remote Controller Switch Functions and Factory Settings..............7 5-1-4 Switch Functions ...
  • Page 131 GB_BS_05_M...

  • Page 132: Dipswitch Functions And Factory Settings

    [5-1 Dipswitch Functions and Factory Settings ] Dipswitch Functions and Factory Settings 5 Control 5-1-1 Outdoor Unit Switch Functions and Factory Settings (1) Control board Function according to switch setting Switch Function Switch setting timing Unit address setting Set to 00 or 51-100 with the dial switch Before power on Without connection With connection to...
  • Page 133 [5-1 Dipswitch Functions and Factory Settings ] Function according to switch setting Switch Function Switch setting timing Enables or disables the de- tection of the following types of inverter compres- sor errors ACCT, DCCT sensor er- ror(5301 Detail code 115, 116) Error detection dis- Error detection en-...
  • Page 134 [5-1 Dipswitch Functions and Factory Settings ] 7) Selectable with the function switches SW6-9 and SW6-10. SW6-10 Self-diagnosis monitor display (round Self-diagnosis monitor display (7seg type LED) No. 0 to 1023 LED) No. 1024 to 2047 SW6-9 SW4 function setting mode No. 0 to 1023 Self-diagnosis monitor display (7seg LED) No.
  • Page 135 [5-1 Dipswitch Functions and Factory Settings ] To change the settings, set SW6-10 to ON, set SW4, and press and hold SWP3 for 2 seconds or longer (OFF ↔ ON). LED3 will light up when the switch setting is ON, and lights off when OFF. Use the LED3 display to confirm that the settings are properly made.
  • Page 136 [5-1 Dipswitch Functions and Factory Settings ] (2) Fan board Function according to switch setting Switch Function Switch setting timing Enabling/Disabling no-load opera- No-load oper- No-load oper- Anytime after power on tion ation disabled ation enabled No-load operation will continue for approximately 30 seconds, and then the unit will come to an ab- normal stop.

  • Page 137: Indoor Unit Switch Functions And Factory Settings

    [5-1 Dipswitch Functions and Factory Settings ] 5-1-2 Indoor Unit Switch Functions and Factory Settings (1) Dipswitches 1) SW1,3 Function according to switch setting Switch setting timing Switch Function Notes Room temperature Built-in sensor on Indoor unit inlet detection position the remote controller Not available Clogged filter detection...

  • Page 138: Remote Controller Switch Functions And Factory Settings

    [5-1 Dipswitch Functions and Factory Settings ] 2) SW2 W/WP/WL20 W/WP/WL25 W/WP/WL63 Model W/WP/WL10 W/WP/WL15 W/WP/WL32 W/WP/WL40 W/WP/WL50 Capacity (model) code setting Model W/WP/WL71 W/WP/WL80 W/WP/WL100 W/WP/WL125 Capacity (model) code setting The figure at left shows that the switches 1 through 5 are set to ON and 6 through 10 are set to OFF. 9 10 The setting timing for SW2 is before power is turned on.
  • Page 139 [5-1 Dipswitch Functions and Factory Settings ] (2) ME remote controller (PAR-F27MEA) Set the address of the remote controller with the rotary switch. Rotary switch 10's digit 1's digit (left) (right) Remote controller unit Example: In case of address 108 Address setting range Setting method Main remote controller...

  • Page 140: Switch Functions

    [5-1 Dipswitch Functions and Factory Settings ] 5-1-4 Switch Functions (1) Control board Function according to switch setting Switch setting tim- Switch Function Any time after be- Water supply SW Not available Available: VB=0 or 1600 ing energized Any time after be- Air vent SW Not available Available...
  • Page 141 [5-1 Dipswitch Functions and Factory Settings ] (2) Pump INV board Function according to switch setting Switch setting tim- Switch Function Address setting. Before power on See the notes be- Before power on low. Only the addresses are preset before shipment (All other switches are set to OFF.) Unless otherwise specified, leave the switch to OFF where indicated by "-,"...

  • Page 142: Outdoor Unit Control

    [5-2 Outdoor Unit Control ] Outdoor Unit Control 5-2-1 Overview The outdoor units are designated as OC in the order of capacity from large to small (if two or more units have the same ca- pacity, in the order of address from small to large). The setting of outdoor unit can be verified by using the self-diagnosis switch (SW4).

  • Page 143: Refrigerant Bypass Control

    [5-2 Outdoor Unit Control ] 5-2-4 Refrigerant Bypass Control Bypass solenoid valves, which bypass the high- and low- pressure sides, perform the following functions. (1) Bypass solenoid valve (SV1a) (ON = Open) SV1a Operation When starting-up the compressor of each ON for 4 minutes.

  • Page 144: Frequency Control

    [5-2 Outdoor Unit Control ] 5-2-5 Frequency Control Depending on the capacity required, the frequency of the compressor is controlled to keep constant evaporation temperature (0°C [32°F] = 0.71 MPa [103 psi]) during cooling operation, and condensing temperature (49°C [120°F] = 2.88 MPa [418 psi]) during heating operation.

  • Page 145: Defrost Operation Control

    [5-2 Outdoor Unit Control ] 5-2-6 Defrost Operation Control (1) Starting the defrost operation The defrost cycle will start when all of the three conditions (outside temperature, cumulative compressor operation time, and pipe temperature) under , , or are met. Condition 1 Condition 2 Condition 3...
  • Page 146 [5-2 Outdoor Unit Control ] (2) Defrost operation Outdoor unit Compressor frequency Model Compressor frequency (E)M200, (E)M250, (E)M300 79Hz models (E)M350, (E)M400 models 107Hz (E)M450 models 121Hz (E)M500 models 147Hz Outdoor unit fan Stopped SV1a ON (open) LEV2a, 2b, 2c 3000 LEV2d (E)M200 - (E)M300: 41, (E)M350 - (E)M500: 20...
  • Page 147 [5-2 Outdoor Unit Control ] (3) Stopping the defrost operation The defrost cycle ends when 12 minutes have passed since the beginning of the cycle, or when the pipe temperatures (TH3) have been continuously detected for 4 minutes (when SW4 (916) is set to OFF) or 2 minutes (when SW4 (916) is set to ON) that exceeds the values in the table below.

  • Page 148: Refrigerant Recovery Control

    [5-2 Outdoor Unit Control ] 5-2-7 Refrigerant Recovery Control The refrigerant recovery control function controls the refrigerant flow at the HBC during heating operation to keep the refrig- erant from collecting inside the HBC. It is also performed during cooling operation to prevent an excessive amount of refrigerant from accumulating in the outdoor heat exchanger.
  • Page 149 [5-2 Outdoor Unit Control ] 5-2-8 Outdoor Unit Fan Control (1) Control method Depending on the capacity required, the rotation speed of the outdoor fan is controlled by the inverter to keep a constant con- densing temperature (outside temperature + 10°C [50°F]) during cooling operation and a constant evaporation temperature (0°C [32°F] = 0.71 MPa [103 psi]) during heating operation.

  • Page 150: Expansion Valve Control (Lev2A, Lev2B, Lev2C, And Lev2D)

    [5-2 Outdoor Unit Control ] 5-2-9 Expansion valve control (LEV2a, LEV2b, LEV2c, and LEV2d) The default opening levels of the expansion valves LEV2a, LEV2b, LEV2c, and LEV2d are shown in Section [5-2-8 Outdoor Unit Fan Control]. When the following control (1) is performed during heating-only or heating-main operation, the valves open or close.

  • Page 151: Operation Mode

    [5-2 Outdoor Unit Control ] 5-2-13 Operation Mode (1) Indoor unit operation mode The operation mode can be selected from the following 6 modes using the remote controller. Cooling mode Heating mode Dry mode Automatic cooling/heating mode Fan mode Stopping mode (2) Outdoor unit operation mode Cooling only mode All indoor units in operation are in cooling mode.

  • Page 152: Demand Control

    [5-2 Outdoor Unit Control ] 5-2-14 Demand Control Cooling/heating operation can be prohibited (Thermo-OFF) by an external input to the indoor units. When DIP SW6-8 is set to ON, the 4-step DEMAND control is enabled. For details, refer to the following page(s). [2-4-7 Various Control Methods Using the Signal Input/Output Connector on Outdoor Unit] 5-2-15 Control of IH energization without the compressor in operation...

  • Page 153: Hbc Control

    [5-3 HBC Control ] HBC Control 5-3-1 Water Pump Control Depending on the capacity required, temperature difference on the indoor units is controlled so as to be within a certain range. During normal operation, the changes in specified voltage of the water pump corresponding to the capacity of connectable indoor units are shown in the graph below.

  • Page 154: 4-Way Valve Control

    [5-3 HBC Control ] 5-3-2 4-Way Valve Control 4-way valves (21S4M (a, b)) turn on or off according to the operation mode. For 21S4Ma, ON indicates switching to the cooling side and OFF indicates switching to the heating side. For 21S4Mb, ON indicates switching to the heating side and OFF indicates switching to the cooling side.

  • Page 155: Valve Block (Vb3) Water Flow Rate Adjustment

    [5-3 HBC Control ] 5-3-3 Valve Block (VB3) Water Flow Rate Adjustment Depending on the capacity required, periodic control is performed every one minute to keep the temperature difference be- tween the heat exchanger outlet pipe temperature and indoor unit port pipe temperature and the opening is controlled in the range between 85 and 700 (cooling) or 900 and 1600 (Heating) pulses.
  • Page 156 [5-3 HBC Control ] 5-3-4 Valve Block (VB3) Water Flow Path Switching Control The following table shows the control pattern of the valve block in different operation modes to switch the water flow. (1) Cooling-only Thermo-ON, Cooling-only Thermo-OFF, Cooling-only test run, Heating-only Ther- mo ON, and Heating-only Thermo OFF Connected indoor unit VB3 command value...

  • Page 157: Bypass Control

    [5-3 HBC Control ] 5-3-5 Bypass Control Solenoid valves have two types: (SV1) that bypass the high- and low- pressure sides; LEV (LEV3). They perform the following functions. (1) Bypass solenoid valve (SV1) (ON: open) Operation mode Cooling-only Thermo-ON Always ON Cooling-main Thermo-ON Always OFF Heating-only Thermo-ON...

  • Page 158: Defrost Operation Control

    [5-3 HBC Control ] 5-3-7 Defrost Operation Control (1) Defrost cycle type The defrost cycle has following two types: Bypass defrost that is the same method as that used in a CITY MULTI series sys- tem and heat recovery defrost (default) that the heat is collected from the water circuit and the defrost cycle ends early. The following figure shows the refrigerant flow for the heat recovery defrost.
  • Page 159 [5-3 HBC Control ] (2) Starting the defrost operation The defrost cycle will start when all of the three conditions (outside temperature, cumulative compressor operation time, and pipe temperature) under , , or are met. Condition 1 Condition 2 Condition 3 Outside temperature...
  • Page 160 [5-3 HBC Control ] (3) Defrost cycle Outdoor unit Compressor model Compressor frequency frequency (E)M200, (E)M250, (E)M300 79Hz (E)M350, (E)M400 107Hz (E)M450 121Hz (E)M500 147Hz outdoor fan Stop SV1a ON (open) LEV2a, 2b, 2c 3000 LEV2d (E)M200-(E)M300: 41, (E)M350-(E)M500: 20 LEV4 LEV9 21S4a, 21S4b...
  • Page 161 [5-3 HBC Control ] (4) Recovering from Defrost The setting of the dip switch 001-9 determines the defrost method (bypass defrost or heat recovery defrost). As shown in the following flow chart, the bypass defrost may be performed during the heat recovery defrost depending on the operation status.

  • Page 162: Refrigerant Recovery Control

    [5-3 HBC Control ] 5-3-8 Refrigerant Recovery Control The refrigerant recovery control function controls the refrigerant flow at the HBC during heating operation to keep the refrig- erant from collecting inside the HBC. It is also performed during cooling operation to prevent an excessive amount of refrigerant from accumulating in the outdoor heat exchanger.

  • Page 163: Water Pump Protection Control

    [5-3 HBC Control ] 5-3-10 Water Pump Protection Control When the circuit is clogged or air enters the water circuit, the protection control starts on the HBC to protect the water pump and the system is stopped depending on the situation. (1) When the internal temperature of the water pump increases When the detection temperature of the water pump outlet pipe is above a certain level, the water pump is stopped to protect it from the heat.

  • Page 164: Chapter 6 Test Run

    Chapter 6 Test Run Read before Test Run........................... 1 Operation Characteristics and Refrigerant Charge ................2 Evaluating and Adjusting Refrigerant Charge ................... 2 6-3-1 Refrigerant Overcharge and undercharge ....................2 6-3-2 Checking the Refrigerant Charge during Operation................2 6-3-3 Maximum refrigerant charge ........................3 6-3-4 Refrigerant Charge Adjustment Mode ....................
  • Page 165 GB_BS_06_F2...

  • Page 166: Read Before Test Run

    [6-1 Read before Test Run ] Read before Test Run 6 Test Run (1) Check for refrigerant leak and loose cables and connectors. (2) When opening or closing the front panel of the control box, do not let it come into contact with any of the internal components.

  • Page 167: Operation Characteristics And Refrigerant Charge

    [6-2 Operation Characteristics and Refrigerant Charge ] Operation Characteristics and Refrigerant Charge It is important to have a clear understanding of the characteristics of refrigerant and the operating characteristics of air conditioners before attempting to adjust the refrigerant amount in a given system. The following shows items of particular importance.
  • Page 168 [6-3 Evaluating and Adjusting Refrigerant Charge ] 6-3-3 Maximum refrigerant charge There is a limit to the amount of refrigerant that can be charged into a unit. Observe the maximum refrigerant charge in the table below. M200-500YNW-A1 Total index of the outdoor units M200 M250 M300...

  • Page 169: The Following Symptoms Are Normal

    [6-4 The Following Symptoms Are Normal ] The Following Symptoms Are Normal Remote controller Symptoms Cause display The auto vane adjusts its posi- After an hour of cooling operation with the auto vane in the vertical posi- tion by itself. tion, the vane may automatically move into the horizontal position.
  • Page 170 Chapter 7 Troubleshooting Using Error Codes Error Code and Preliminary Error Code Lists ..................1 Error Code Definitions and Solutions: Codes [0 - 999] ..............8 7-2-1 Error Code [0403] ........................... 8 7-2-2 Error Code [0404] ..........................10 Error Code Definitions and Solutions: Codes [1000 - 1999] ............11 7-3-1 Error Code [1102] ..........................
  • Page 171 7-6-21 Error Code [4228] Detail Code 101....................... 39 7-6-22 Error Code [4230] Detail Code 126....................... 39 7-6-23 Error Code [4235, 4236] Detail Code 125..................... 40 7-6-24 Error Code [4240, 4245, 4246] ......................41 7-6-25 Error Code [4250, 4255, 4256] Detail Code 101................... 42 7-6-26 Error Code [4250, 4255, 4256] Detail Code 104...................
  • Page 172 7-8-20 Error Code [6840] ..........................77 7-8-21 Error Code [6841] ..........................77 7-8-22 Error Code [6842] ..........................78 7-8-23 Error Code [6843] ..........................79 7-8-24 Error Code [6846] ..........................80 Error Code Definitions and Solutions: Codes [7000 - 7999] ............81 7-9-1 Error Code [7100] ..........................
  • Page 173 GB_BS_07_M...

  • Page 174: Error Code And Preliminary Error Code Lists

    [7-1 Error Code and Preliminary Error Code Lists ] Error Code and Preliminary Error Code Lists 7 Troubleshooting Using Error Codes Searched unit Error Prelimi- (prelim- Error nary inary) Error code definition Notes Code error detail code code 4300 01, 05, 4305 (page 8) 4306...
  • Page 175 [7-1 Error Code and Preliminary Error Code Lists ] Searched unit Error Prelimi- (prelim- Error nary inary) Error code definition Notes Code error detail code code 4130 − − Control power supply error (page 33) [101]- 4131 − Slightly open indoor unit valve during power cut (page 34) [150] Backup operation...
  • Page 176 [7-1 Error Code and Preliminary Error Code Lists ] Searched unit Error Prelimi- (prelim- Error nary inary) Error code definition Notes Code error detail code code Temperature sensor Accumulator inlet tempera- 5105 1204 (page 50) fault ture (TH5) Temperature sensor 5107 1221 Outside temperature (TH7)
  • Page 177 [7-1 Error Code and Preliminary Error Code Lists ] Searched unit Error Prelimi- (prelim- Error nary inary) Error code definition Notes Code error detail code code 1st port returned water 5161 (page 52) temp. (TH31a) 2nd port returned water 5162 (page 52) temp.
  • Page 178 [7-1 Error Code and Preliminary Error Code Lists ] Searched unit Error Prelimi- (prelim- Error nary inary) Error code definition Notes Code error detail code code 5214 Water pressure sensor fault (HBC Pw4) (page 55) Backup operation 5301 4300 [115] ACCT sensor fault (page 55) [117]...
  • Page 179 [7-1 Error Code and Preliminary Error Code Lists ] Searched unit Error Prelimi- (prelim- Error nary inary) Error code definition Notes Code error detail code code A control communication transmission/reception 6842 (page 78) hardware trouble 6843 A control communication start bit detection error (page 79) 6846 Start-up time over...
  • Page 180 [7-1 Error Code and Preliminary Error Code Lists ] Overload protec- Current effective Current peak value Temperature pro- INV board Outdoor units tion Imax (Arms) value error (Arms) error (Apeak) tection TOL (°C) (E)M200 (E)M250 (E)M300 INVS/19Y (E)M350 (E)M400 (E)M450 (E)M500...

  • Page 181: Error Code Definitions And Solutions: Codes [0 - 999]

    [7-2 Error Code Definitions and Solutions: Codes [0 - 999] ] Error Code Definitions and Solutions: Codes [0 - 999] 7-2-1 Error Code [0403] 1. Error code definition Serial communication error 2. Error definition and error detection method [Outdoor unit] Serial communication error between the control board and the INV board on the compressor, and between the control board and the Fan board Detail code 1: Between the control board and the INV board...
  • Page 182 [7-2 Error Code Definitions and Solutions: Codes [0 - 999] ] (4) Incorrect DIPSW setting on the Fan board Make sure the DIPSW on the Fan board are set as follows. Models with a single fan DIPSW 1-3: ON (All other switches: OFF) Models with two fans DIPSW 1-3 on the right Fan board: ON (All other switches: OFF) DIPSW 1-4 on the left Fan board: ON (All other switches: OFF)

  • Page 183: Error Code [0404]

    [7-2 Error Code Definitions and Solutions: Codes [0 - 999] ] 7-2-2 Error Code [0404] 1. Error code definition Indoor unit control-related errors 2. Error definition and error detection method Indoor controller board Abnormal if data cannot be read normally from the nonvolatile memory of the indoor controller board. 3.

  • Page 184: Error Code Definitions And Solutions: Codes [1000 - 1999]

    [7-3 Error Code Definitions and Solutions: Codes [1000 - 1999] ] Error Code Definitions and Solutions: Codes [1000 - 1999] 7-3-1 Error Code [1102] 1. Error code definition Discharge temperature fault 2. Error definition and error detection method 1) If the discharge temperature of 120 °C [248°F] or more is detected during the operation (the first detection), the outdoor unit stops once, turns to anti-restart mode for 3 minutes, and restarts after 3 minutes automatically.

  • Page 185: Error Code [1301]

    [7-3 Error Code Definitions and Solutions: Codes [1000 - 1999] ] 7-3-2 Error Code [1301] 1. Error code definition Low pressure fault 2. Error definition and error detection method When starting the compressor from Stop Mode for the first time if low pressure reads 0.098MPa [14psi] immediately before start-up, the operation immediately stops.

  • Page 186: Error Code [1302] (During Operation)

    [7-3 Error Code Definitions and Solutions: Codes [1000 - 1999] ] 7-3-3 Error Code [1302] (during operation) 1. Error code definition High pressure fault 1 (Outdoor unit) 2. Error definition and error detection method If the pressure of 3.78MPa [548psi] or higher is detected by the pressure sensor during operation (the first detection), the outdoor stops once, turns to antirestart mode for 3 minutes, and restarts after 3 minutes automatically.

  • Page 187: Error Code [1302] (At Startup)

    [7-3 Error Code Definitions and Solutions: Codes [1000 - 1999] ] 7-3-4 Error Code [1302] (at startup) 1. Error code definition High pressure fault 2 (Outdoor unit) 2. Error definition and error detection method If the pressure of 0.098MPa [14psi] or lower is registered on the pressure sensor immediately before start-up, it will trigger an abnormal stop, and error code "1302"...

  • Page 188: Error Code Definitions And Solutions: Codes [2000 - 2999]

    [7-4 Error Code Definitions and Solutions: Codes [2000 - 2999] ] Error Code Definitions and Solutions: Codes [2000 - 2999] 7-4-1 Error Code [2500] (Models with a drain sensor) 1. Error code definition Drain sensor submergence 2. Error definition and error detection method 1) If an immersion of the drain sensor in the water is detected while the unit is in any mode other than the Cool/Dry mode and when the drain pump goes from OFF to ON, this condition is considered preliminary water leakage.

  • Page 189: Error Code [2500] (Models With A Float Switch)

    [7-4 Error Code Definitions and Solutions: Codes [2000 - 2999] ] 7-4-2 Error Code [2500] (Models with a float switch) 1. Error code definition Drain sensor submergence 2. Error definition and error detection method 1) If an immersion of the float switch in the water is detected while the unit is in any mode other than the Cool/Dry mode and when the drain pump goes from OFF to ON, this condition is considered preliminary water leakage.

  • Page 190: Error Code [2501] (Water Pump Fault)

    [7-4 Error Code Definitions and Solutions: Codes [2000 - 2999] ] 7-4-3 Error Code [2501] (Water pump fault) 1. Error code definition Pump water supply cutoff 2. Error definition and error detection method 1) The pressure differential of less than 10 kPa as obtained from the pressures taken before and after Pump 1 (Pw2-Pw1) was detected three times in a row while Pump 1 is in operation.

  • Page 191: Error Code [2502] (Models With A Drain Sensor)

    [7-4 Error Code Definitions and Solutions: Codes [2000 - 2999] ] 7-4-4 Error Code [2502] (Models with a drain sensor) 1. Error code definition Drain pump fault 2. Error definition and error detection method 1) Make the drain sensor thermistor self-heat by passing current through it. If the temperature rise is small, it is interpreted that the sensor is immersed in water.

  • Page 192: Error Code [2502] (Models With A Float Switch)

    [7-4 Error Code Definitions and Solutions: Codes [2000 - 2999] ] 7-4-5 Error Code [2502] (Models with a float switch) 1. Error code definition Drain pump fault 2. Error definition and error detection method 1) The immersion of sensor tip in water is detected by the ON/OFF signal from the float switch. Submergence of the sensor When it is detected that the float switch has been ON for 15 seconds, it is interpreted that the sensor tip is immersed in water.

  • Page 193: Error Code [2503]

    [7-4 Error Code Definitions and Solutions: Codes [2000 - 2999] ] 7-4-6 Error Code [2503] 1. Error code definition Drain sensor (Thd) fault 2. Error definition and error detection method If the open or short circuit of the thermistor has been detected for 30 seconds, this condition is considered to be a preliminary error, and the unit goes into the 3-minute restart delay mode.

  • Page 194: Error Code [2512] (Control Valve Failure) (Indoor Unit)

    [7-4 Error Code Definitions and Solutions: Codes [2000 - 2999] ] 7-4-7 Error Code [2512] (Control valve failure) (Indoor unit) 1. Error code definition Flow control valve fault (indoor unit) 2. Error definition and error detection method Limit signal that is output from flow control valve is not detected or is not reset after it is detected. 3.
  • Page 195 [7-4 Error Code Definitions and Solutions: Codes [2000 - 2999] ] 7-4-9 Error Code [2519] 1. Error code definition Water pressure drop 2. Error definition and error detection method 1) If the reading of the pressure sensor Pw1 or Pw2 is below 10 kPa while Pump 1 is in operation, or the reading of the pressure sensor Pw3 or Pw4 is below 10 kPa while Pump 2 is in operation (first detection), the outdoor units and the pumps will stop, go into the 3-minute restart delay mode, and then restart.
  • Page 196 [7-4 Error Code Definitions and Solutions: Codes [2000 - 2999] ] 7-4-11 Error Code [2600] 1. Error code definition Water leakage 2. Cause, check method and remedy Check that water does not leak from the pipes in such as the humidifier. 7-4-12 Error Code [2601] 1.

  • Page 197: Error Code Definitions And Solutions: Codes [3000 - 3999]

    [7-5 Error Code Definitions and Solutions: Codes [3000 - 3999] ] Error Code Definitions and Solutions: Codes [3000 - 3999] 7-5-1 Error Code [3121] 1. Error code definition Out-of-range outside air temperature 2. Error definition and error detection method When the thermistor temperature of -28°C[-18°F] or below has continuously been detected for 3 minutes during heating op- eration (during compressor operation), the unit makes an error stop and "3121"...
  • Page 198 [7-5 Error Code Definitions and Solutions: Codes [3000 - 3999] ] 7-5-2 Error Code [3511] 1. Error code definition Refrigerant overcooling 2. Error definition and error detection method 1) If the condition "THHS ≤ A °C remains true for continuous 6 minutes and 30 seconds" is met (for the first time) during oper- ation, the outdoor unit will stop, go into the three-minute restart delay mode, and then automatically resume operation after three minutes have passed.

  • Page 199: Error Code Definitions And Solutions: Codes [4000 - 4999]

    [7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ] Error Code Definitions and Solutions: Codes [4000 - 4999] 7-6-1 Error Code [4102] 1. Error code definition Open phase 2. Error definition and error detection method An open phase of the power supply (L1 phase, N phase) was detected at power on. The L3 phase current is outside of the specified range.
  • Page 200 [7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ] 7-6-2 Error Code [4106] 1. Error code definition 2. Error definition and error detection method Transmission power output failure 3.
  • Page 201 [7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ] 7-6-4 Error Code [4114] 1. Error code definition Indoor unit fan motor error 2. Error definition and error detection method When the fan motor output from the indoor unit circuit board is ON and when the rotation speed input from the fan motor cannot be detected for 30 seconds or more 3.
  • Page 202 [7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ] 7-6-6 Error Code [4116] 1. Error code definition RPM error/Motor error 2. Error definition and error detection method LOSSNAY The motor keep running even if the power is OFF. The thermal overload relay is ON.

  • Page 203: Error Code [2519]

    [7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ] 7-6-8 Error Code [4124] 1. Error code definition Electric system not operate due to damper abnormality 2. Error definition and error detection method When the damper is not located at the designated position. 3.
  • Page 204 [7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ] 7-6-9 Error Code [4129] Detail Code 101 1. Error code definition Converter error (Detail code 101) 2. Error definition and error detection method Vdc ≥ 420 V or an overcurrent through the converter was detected during inverter operation. 3.
  • Page 205 [7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ] 7-6-11 Error Code [4129] Detail Code 103 1. Error code definition Signal wire fault 2. Error definition and error detection method Power supply signal not detected by control board. 3.

  • Page 206: Error Code [2601]

    [7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ] 7-6-12 Error Code [4130] 1. Error code definition Control power supply error 2. Error definition and error detection method No power is supplied to the control board from the power board. 3.

  • Page 207: Error Code [4102]

    [7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ] 7-6-13 Error Code [4131] (When indoor units with FCV are connected) 1. Error code definition Slightly open indoor unit valve during power cut 2. Error definition and error detection method On the indoor units to which no power is supplied, when a temperature difference of 10°C or greater is detected between the return air temperature (TH1) and the inlet water temperature (TH2) continuously for 5 minutes during cooling operation, the error code [4131] will be displayed, and the system will come to an abnormal stop.

  • Page 208: Error Code [4109]

    [7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ] 7-6-14 Error Code [4220, 4225, 4226] Detail Code 108 1. Error code definition Abnormal bus voltage drop (Detail code 108) 2. Error definition and error detection method [Outdoor unit] If Vdc 289V or less is detected during Inverter operation.

  • Page 209: Error Code [4116]

    [7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ] [HBC] (1) Power supply environment Find out if there was a (momentary) power failure. Check that the power-supply voltage between L and N is 198 V or greater. Check the power supply voltage waveform for distortion. (2) Voltage drop Measure the voltage across TBP and TBN on the power-supply board while the inverter is stopped.

  • Page 210: Error Code [4124]

    [7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ] 7-6-16 Error Code [4220] Detail Code 110 1. Error code definition VDC error (Detail code 110) 2. Error definition and error detection method BUS voltage error When Vdc is equal to or greater than 814 volts (hardware detection) 3.
  • Page 211 [7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ] 7-6-18 Error Code [4220] Detail Code 123 1. Error code definition Voltage boost control error (Detail code 123)(outdoor unit) 2. Error definition and error detection method When a drop in power supply voltage or a malfunction in the booster circuit is detected 3.
  • Page 212 [7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ] 7-6-20 Error Code [4220, 4225, 4226] Detail Code 131 1. Error code definition Low bus voltage at startup (Detail code 131) 2. Error definition and error detection method When Vdc 289 V is detected just before the inverter operation.
  • Page 213 [7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ] 7-6-23 Error Code [4235, 4236] Detail Code 125 1. Error code definition Heatsink overheat protection (Detail code 125) 2. Error definition and error detection method [Outdoor unit] Detection of fan INV heatsink temperature (THHS) ≥ 100°C [HBC] Detection of pump INV heatsink temperature (THHS) ≥...

  • Page 214: Error Code [4240, 4245, 4246]

    [7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ] 7-6-24 Error Code [4240, 4245, 4246] 1. Error code definition Overload protection 2. Error definition and error detection method If the output current of "(Iac) >Imax (Arms)" or "THHS > TOL" is continuously detected for 10 minutes during inverter operation. Refer to the following page(s).
  • Page 215 [7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ] 7-6-25 Error Code [4250, 4255, 4256] Detail Code 101 1. Error code definition IPM error (Detail code 101) 2. Error definition and error detection method [Outdoor unit] In the case of 4250 If an overcurrent is detected by the overcurrent detection circuit CT003 (R127 when INV37YC) on the INV board.
  • Page 216 [7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ] 7-6-26 Error Code [4250, 4255, 4256] Detail Code 104 1. Error code definition Short-circuited IPM/Ground fault (Detail code 104) 2. Error definition and error detection method When IPM/IGBT short damage or grounding on the load side is detected just before starting the inverter. 3.
  • Page 217 [7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ] 7-6-27 Error Code [4250, 4255, 4256] Detail Code 105 1. Error code definition Overcurrent error due to short-circuited motor (Detail code 105) 2. Error definition and error detection method When a short is detected on the load side just before starting the inverter operation.
  • Page 218 [7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ] 7-6-28 Error Code [4250, 4255, 4256] Detail Code 106 and 107 1. Error code definition Instantaneous overcurrent (Detail code 106) Overcurrent (effective value) (Detail code 107) 2. Error definition and error detection method When a current above the specified value is detected by the electric current sensor.
  • Page 219 [7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ] [HBC] Cause Check method and remedy Pump INV board failure Refer to the following page(s). [8-10-12 Checking the Error-Detection Circuit on the Pump INV Board (Without load)] [8-10-13 Checking the Pump INV Board for Damage (Without load)] [8-10-14 Checking the Pump INV Board for Damage (During pump operation)] Pump failure Check the outdoor unit pump for proper operation.

  • Page 220: Error Code [5102] (Indoor Unit)

    [7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ] 7-6-30 Error Code [4255, 4256] Detail Code 137 1. Error code definition Motor synchronization loss (Detail code 137) 2. Error definition and error detection method [Outdoor unit] Fan motor locking was detected during operation. [HBC] Pump motor locking was detected during operation.

  • Page 221: Error Code Definitions And Solutions: Codes [5000 - 5999]

    [7-7 Error Code Definitions and Solutions: Codes [5000 - 5999] ] Error Code Definitions and Solutions: Codes [5000 - 5999] 7-7-1 Error Code [5102] (Indoor unit) 1. Error code definition Incorrect pipe connection (indoor unit) 2. Error definition and error detection method Water inlet and outlet pipes are connected in reverse.

  • Page 222: Error Code [5103,5104,5105,5107,5115]

    [7-7 Error Code Definitions and Solutions: Codes [5000 - 5999] ] 7-7-2 Error Code [5104] 1. Error code definition 5104 Intake air temperature sensor (TH1) fault (OA processing unit) Intake air temperature sensor (TH24) fault (All-fresh (100% outdoor air) type indoor unit) 2.

  • Page 223: Error Code [5201]

    [7-7 Error Code Definitions and Solutions: Codes [5000 - 5999] ] 7-7-3 Error Code [5103,5104,5105,5107,5115] 1. Error code definition 5103 Heat exchanger outlet temperature sensor (TH3) fault (Outdoor unit) 5104 Discharge temperature sensor (TH4) fault (Outdoor unit) 5105 Accumulator inlet temperature sensor (TH5) fault (Outdoor unit) 5107 Outside temperature sensor (TH7) fault (Outdoor unit) 5115...

  • Page 224: Error Code [5201]

    [7-7 Error Code Definitions and Solutions: Codes [5000 - 5999] ] 7-7-4 Error Code [5110] 1. Error code definition Heatsink temperature sensor (THHS) fault (Detail code 01, 05, 06) 2. Error definition and error detection method When a short or an open of THHS is detected just before or during the inverter operation. 3.
  • Page 225 [7-7 Error Code Definitions and Solutions: Codes [5000 - 5999] ] 7-7-5 Error Code [5111-5178] 1. Error code definition 5111-5116 Temperature sensor fault (HBC) (TH11~TH16) 5132-5135 Temperature sensor fault (HBC) (TH32~TH35) 5141-5156 Temperature sensor fault (HBC) (TH31a~TH31p) 5161-5176 Temperature sensor fault (Sub-HBC) (TH31a~TH31p) 5177-5178 Temperature sensor fault (Sub-HBC) (TH32~TH33) 2.
  • Page 226 [7-7 Error Code Definitions and Solutions: Codes [5000 - 5999] ] 7-7-6 Error Code [5201] 1. Error code definition High-pressure sensor fault (63HS1) 2. Error definition and error detection method If the high pressure sensor detects 0.098MPa [14psi] or less during the operation, the outdoor unit stops once, turns to anti- restart mode for 3 minutes, and restarts after 3 minutes when the detected high pressure sensor is 0.098MPa [14psi] or more.
  • Page 227 [7-7 Error Code Definitions and Solutions: Codes [5000 - 5999] ] 7-7-8 Error Code [5201, 5203] 1. Error code definition 5201 High-pressure sensor fault (HBC PS1) 5203 Intermediate pressure sensor fault (HBC PS3) 2. Error definition and error detection method When a pressure sensor reading of 4.06 MPa [589 psi] or above or 0.098Mpa[142psi] or below is detected, error codes "5201"...
  • Page 228 [7-7 Error Code Definitions and Solutions: Codes [5000 - 5999] ] 7-7-10 Error Code [5211-5214] 1. Error code definition 5211 Pump 1 suction pressure fault (HBC Pw1) 5212 Pump 1 discharge pressure fault (HBC Pw2) 5213 Pump 2 suction pressure fault (HBC Pw3) 5214 Pump 2 discharge pressure fault (HBC Pw4) 2.
  • Page 229 [7-7 Error Code Definitions and Solutions: Codes [5000 - 5999] ] 7-7-12 Error Code [5301] Detail Code 117 1. Error code definition ACCT sensor circuit fault (Detail code 117) 2. Error definition and error detection method When an error value is detected with the ACCT detection circuit just before the inverter starts 3.
  • Page 230 [7-7 Error Code Definitions and Solutions: Codes [5000 - 5999] ] 7-7-13 Error Code [5301, 5305, 5306] Detail Code 119 1. Error code definition Open-circuited IPM/Loose ACCT connector (Detail code 119) 2. Error definition and error detection method Presence of enough current cannot be detected during the self-diagnostic operation immediately before inverter startup. 3.
  • Page 231 [7-7 Error Code Definitions and Solutions: Codes [5000 - 5999] ] 7-7-14 Error Code [5301, 5305, 5306] Detail Code 120 1. Error code definition Faulty ACCT wiring (Detail code 120) 2. Error definition and error detection method Presence of target current cannot be detected during the self-diagnostic operation immediately before startup. 3.
  • Page 232 [7-7 Error Code Definitions and Solutions: Codes [5000 - 5999] ] 7-7-15 Error Code [5305, 5306] Detail Code 135 1. Error code definition Current sensor fault (Detail code 135) 2. Error definition and error detection method Detection of output current below 0.2 Arms for 10 continuous seconds while fan motor is in operation 3.
  • Page 233 [7-7 Error Code Definitions and Solutions: Codes [5000 - 5999] ] 7-7-16 Error Code [5305, 5306] Detail Code 136 1. Error code definition Current sensor/circuit fault (Detail code 136) 2. Error definition and error detection method [Outdoor unit] Detection of abnormal value by the current detection circuit before the startup of fan motor [HBC] Detection of abnormal value by the current detection circuit before the startup of pump motor 3.

  • Page 234: Error Code Definitions And Solutions: Codes [6000 - 6999]

    [7-8 Error Code Definitions and Solutions: Codes [6000 - 6999] ] Error Code Definitions and Solutions: Codes [6000 - 6999] 7-8-1 Error Code [6201] 1. Error code definition Remote controller board fault (nonvolatile memory error) 2. Error definition and error detection method This error is detected when the data cannot be read out from the built-in nonvolatile memory on the remote controller.

  • Page 235: Error Code [6600]

    [7-8 Error Code Definitions and Solutions: Codes [6000 - 6999] ] 7-8-3 Error Code [6600] 1. Error code definition Address overlaps 2. Error definition and error detection method An error in which signals from more than one indoor units with the same address are received Detail code 001: Detection of overlapped address in centralized control system Detail code 002: Detection of overlapped address in indoor unit system The address and attribute that appear on the remote controller indicate the controller that detected the error.

  • Page 236: Error Code [6606]

    [7-8 Error Code Definitions and Solutions: Codes [6000 - 6999] ] 7-8-5 Error Code [6602] 1. Error code definition Transmission processor hardware error 2. Error definition and error detection method Although "0" was surely transmitted by the transmission processor, "1" is displayed on the transmission line. Detail code 001: Transmission processor hardware error in centralized control system Detail code 002: Transmission processor hardware error in indoor unit system The address/attribute appeared on the display on the remote controller indicates the controller where an error oc-...
  • Page 237 [7-8 Error Code Definitions and Solutions: Codes [6000 - 6999] ] 7-8-6 Error Code [6603] 1. Error code definition Transmission line bus busy error 2. Error definition and error detection method Generated error when the command cannot be transmitted for 4-10 minutes in a row due to bus-busy Generated error when the command cannot be transmitted to the transmission line for 4-10 minutes in a row due to noise Detail code 001: Transmission Bus-Busy error in centralized control system Detail code 002: Transmission Bus-Busy error in indoor unit system...

  • Page 238: Error Code [6607] Error Source Address = Outdoor Unit (Oc)

    [7-8 Error Code Definitions and Solutions: Codes [6000 - 6999] ] 7-8-8 Error Code [6607] Error Source Address = Outdoor Unit (OC) 1. Error code definition No ACK error 2. Error definition and error detection method The error is detected when no acknowledgement (ACK signal) is received after the transmission. (eg. When the data is trans- mitted six times in a row with 30 seconds interval, the error is detected on the transmission side.) The address/attribute appeared on the display on the remote controller indicates the controller which did not provide the response (ACK).

  • Page 239: Error Code [6607] Error Source Address = Indoor Unit (Ic)

    [7-8 Error Code Definitions and Solutions: Codes [6000 - 6999] ] 7-8-10 Error Code [6607] Error Source Address = Indoor Unit (IC) 1. Error code definition No ACK error 2. Error definition and error detection method The error is detected when no acknowledgement (ACK signal) is received after the transmission. (eg. When the data is trans- mitted six times in a row with 30 seconds interval, the error is detected on the transmission side.) The address/attribute appeared on the display on the remote controller indicates the controller which did not provide the response (ACK).
  • Page 240 [7-8 Error Code Definitions and Solutions: Codes [6000 - 6999] ] (2) Troubleshooting problems for indoor units (B) Cause Check method and remedy When the power supply unit for transmission lines is used Check voltage of the transmission line for central- and the male power supply connector is connected to the ized control.

  • Page 241: Error Code [6607] Error Source Address = Me Remote Controller

    [7-8 Error Code Definitions and Solutions: Codes [6000 - 6999] ] 7-8-11 Error Code [6607] Error Source Address = ME Remote Controller 1. Error code definition No ACK error 2. Error definition and error detection method The error is detected when no acknowledgement (ACK signal) is received after the transmission. (eg. When the data is trans- mitted six times in a row with 30 seconds interval, the error is detected on the transmission side.) The address/attribute appeared on the display on the remote controller indicates the controller which did not provide the response (ACK).

  • Page 242: Error Code [6607] Error Source Address = System Controller

    [7-8 Error Code Definitions and Solutions: Codes [6000 - 6999] ] 7-8-12 Error Code [6607] Error Source Address = System Controller 1. Error code definition No ACK error 2. Error definition and error detection method The error is detected when no acknowledgement (ACK signal) is received after the transmission. (eg. When the data is trans- mitted six times in a row with 30 seconds interval, the error is detected on the transmission side.) The address/attribute appeared on the display on the remote controller indicates the controller which did not provide the response (ACK).
  • Page 243 [7-8 Error Code Definitions and Solutions: Codes [6000 - 6999] ] 7-8-13 Error Code [6607] All Error Source Addresses 1. Error code definition No ACK error 2. Error definition and error detection method The error is detected when no acknowledgement (ACK signal) is received after the transmission. (eg. When the data is trans- mitted six times in a row with 30 seconds interval, the error is detected on the transmission side.) The address/attribute appeared on the display on the remote controller indicates the controller which did not provide the response (ACK).

  • Page 244: Error Code [6607] No Error Source Address

    [7-8 Error Code Definitions and Solutions: Codes [6000 - 6999] ] 7-8-14 Error Code [6607] No Error Source Address 1. Error code definition No ACK error 2. Error definition and error detection method The error is detected when no acknowledgement (ACK signal) is received after the transmission. (eg. When the data is trans- mitted six times in a row with 30 seconds interval, the error is detected on the transmission side.) The address/attribute appeared on the display on the remote controller indicates the controller which did not provide the response (ACK).

  • Page 245: Error Code [6608]

    [7-8 Error Code Definitions and Solutions: Codes [6000 - 6999] ] 7-8-15 Error Code [6608] 1. Error code definition No response error 2. Error definition and error detection method When no response command is returned although acknowledgement (ACK) is received after transmission, an error is detect- When the data is transmitted 10 times in a row with 3 seconds interval, an error is detected on the transmission side.

  • Page 246: Error Code [6832]

    [7-8 Error Code Definitions and Solutions: Codes [6000 - 6999] ] 7-8-16 Error Code [6831] 1. Error code definition MA remote controller signal reception error (No signal reception) 2. Error definition and error detection method Communication between the MA remote controller and the indoor unit is not done properly. No proper data has been received for 3 minutes.

  • Page 247: Error Code [6834]

    [7-8 Error Code Definitions and Solutions: Codes [6000 - 6999] ] 7-8-17 Error Code [6832] 1. Error code definition MA remote controller signal transmission error (Synchronization error) 2. Error definition and error detection method MA remote controller and the indoor unit is not done properly. Failure to detect opening in the transmission path and unable to send signals Indoor unit: 3 minutes Remote controller: 6 seconds...

  • Page 248: Error Code [6841]

    [7-8 Error Code Definitions and Solutions: Codes [6000 - 6999] ] 7-8-18 Error Code [6833] 1. Error code definition MA remote controller signal transmission error (Hardware error) 2. Error definition and error detection method Communication between the MA remote controller and the indoor unit is not done properly. An error occurs when the transmitted data and the received data differ for 30 times in a row.

  • Page 249: Error Code [6843]

    [7-8 Error Code Definitions and Solutions: Codes [6000 - 6999] ] 7-8-19 Error Code [6834] 1. Error code definition MA remote controller signal reception error (Start bit detection error) 2. Error definition and error detection method Communication between the MA remote controller and the indoor unit is not done properly. No proper data has been received for 2 minutes.
  • Page 250 [7-8 Error Code Definitions and Solutions: Codes [6000 - 6999] ] 7-8-20 Error Code [6840] 1. Error code definition Indoor-outdoor communication: Reception error 2. Error definition and error detection method Abnormal if indoor controller board could not receive any signal normally for 6 minutes after turning the power on Abnormal if indoor controller board could not receive any signal normally for 3 minutes.
  • Page 251 [7-8 Error Code Definitions and Solutions: Codes [6000 - 6999] ] 7-8-22 Error Code [6842] 1. Error code definition Indoor-outdoor communication: Transmission error 2. Error definition and error detection method Indoor/outdoor unit communication error (Transmitting error) Abnormal if "1" receiving is detected 30 times continuously though indoor controller board has transmitted "0". 3.
  • Page 252 [7-8 Error Code Definitions and Solutions: Codes [6000 - 6999] ] 7-8-23 Error Code [6843] 1. Error code definition A control communication start bit detection error 2. Error definition and error detection method Indoor/outdoor unit communication error Abnormal if indoor control board could not receive any signal normally for 6 minutes after turning the power on. Abnormal if indoor control board could not receive any signal normally for 3 minutes.
  • Page 253 [7-8 Error Code Definitions and Solutions: Codes [6000 - 6999] ] 7-8-24 Error Code [6846] 1. Error code definition Start-up time over 2. Error definition and error detection method Start-up time over The unit cannot finish start-up process within 4 minutes after power on. 3.

  • Page 254: Error Code Definitions And Solutions: Codes [7000 - 7999]

    [7-9 Error Code Definitions and Solutions: Codes [7000 - 7999] ] Error Code Definitions and Solutions: Codes [7000 - 7999] 7-9-1 Error Code [7100] 1. Error code definition Total capacity error 2. Error definition and error detection method The model total of indoor units in the system with one outdoor unit exceeds limitations. 3.

  • Page 255: Error Code [7101]

    [7-9 Error Code Definitions and Solutions: Codes [7000 - 7999] ] 7-9-2 Error Code [7101] 1. Error code definition Capacity code setting error 2. Error definition and error detection method Connection of incompatible (wrong capacity code) indoor unit or outdoor unit 3.

  • Page 256: Error Code [7107]

    [7-9 Error Code Definitions and Solutions: Codes [7000 - 7999] ] 7-9-3 Error Code [7102] 1. Error code definition Wrong number of connected units 2. Error definition and error detection method The number of connected indoor units is "0" or exceeds the allowable value. 3.

  • Page 257: Error Code [7110]

    [7-9 Error Code Definitions and Solutions: Codes [7000 - 7999] ] 7-9-4 Error Code [7107] 1. Error code definition Port setting error 2. Error definition and error detection method The port with wrong number is connected to the indoor unit.The model total connected to the port is greater than the specifi- cation.
  • Page 258 [7-9 Error Code Definitions and Solutions: Codes [7000 - 7999] ] Error source Cause Check method and remedy For the address of the HBC (Sub), is 50 added to Is th b)? Change the HBC (Sub) the smallest indoor unit address, address.

  • Page 259: Error Code [7113]

    [7-9 Error Code Definitions and Solutions: Codes [7000 - 7999] ] 7-9-5 Error Code [7110] 1. Error code definition Connection information signal transmission/reception error 2. Error definition and error detection method The given indoor unit is inoperable because it is not properly connected to the outdoor unit in the same system. 3.

  • Page 260: Error Code [7130]

    [7-9 Error Code Definitions and Solutions: Codes [7000 - 7999] ] 7-9-7 Error Code [7113] 1. Error code definition Function setting error (improper connection of CNTYP) 2. Error source, cause, check method and remedy After troubleshooting the error using the check methods and remedies shown below, turn the power back on. Error source Cause Check method and remedy...
  • Page 261 [7-9 Error Code Definitions and Solutions: Codes [7000 - 7999] ] 7-9-8 Error Code [7117] 1. Error code definition Model setting error 2. Error source, cause, check method and remedy After troubleshooting the error using the check methods and remedies shown below, turn the power back on. Error source Cause Check method and remedy...
  • Page 262 [7-9 Error Code Definitions and Solutions: Codes [7000 - 7999] ] 7-9-9 Error Code [7130] 1. Error code definition Incompatible unit combination 2. Error definition and error detection method The check code will appear when the indoor units and HBC with different refrigerant systems are connected. 3.

  • Page 263: Unit Error Code Definitions And Solutions: Codes [Er91 - Er99]

    [7-10 Unit Error Code Definitions and Solutions: Codes [Er91 - Er99] ] 7-10 Unit Error Code Definitions and Solutions: Codes [Er91 - Er99] 7-10-1 Error Code [Er91] 1. Error code definition Firmware update error (outdoor unit) 2. Error definition and error detection method The error code will be displayed when the outdoor unit fails to write the firmware update program.

  • Page 264: Chapter 8 Troubleshooting Based On Observed Symptoms

    Chapter 8 Troubleshooting Based on Observed Symptoms MA Remote Controller Problems......................1 8-1-1 The LCD Does Not Light Up........................1 8-1-2 The LCD Momentarily Lights Up and Then Goes Off................2 8-1-3 "HO" and "PLEASE WAIT" Do Not Go Off the Screen................3 8-1-4 Air Conditioning Units Do Not Operate When the ON Button Is Pressed.
  • Page 265 8-10-11 Checking the Pump Motor for Ground Fault and Coil Resistance Problems ........48 8-10-12 Checking the Error-Detection Circuit on the Pump INV Board (Without load) ........48 8-10-13 Checking the Pump INV Board for Damage (Without load)..............48 8-10-14 Checking the Pump INV Board for Damage (During pump operation) ..........49 8-10-15 Checking the Installation Conditions.....................
  • Page 266 8-15-20 Water Pressure Protection Valve Replacement Procedure (HBC) ............. 176 8-16 Sub-HBC Maintenance Instructions....................177 8-16-1 Valve Block Assembly Replacement Procedur (Sub HBC) ..............177 8-16-2 Thermistor (TH31) Replacement Procedur (Sub HBC) ..............179 8-16-3 Thermistor (TH32, TH33) Replacement Procedur (Sub HBC)............180 8-16-4 Air Vent Valve Replacement Procedure (Sub HBC) ................
  • Page 267 GB_BS_08_L...

  • Page 268: Ma Remote Controller Problems

    [8-1 MA Remote Controller Problems ] MA Remote Controller Problems 8 Troubleshooting Based on Observed Symptoms 8-1-1 The LCD Does Not Light Up. 1. Phenomena Even if the operation button on the remote controller is pressed, the display remains unlit and the unit does not start running. (Power indicator ( ) is unlit and no lines appear on the remote controller.) 2.

  • Page 269: The Lcd Momentarily Lights Up And Then Goes Off

    [8-1 MA Remote Controller Problems ] 8-1-2 The LCD Momentarily Lights Up and Then Goes Off. 1. Phenomena When the remote controller operation SW is turned on, the operation status briefly appears on the display, then it goes off, and the display lights out immediately, and the unit stops. 2.

  • Page 270: Ho" And "Please Wait" Do Not Go Off The Screen

    [8-1 MA Remote Controller Problems ] 8-1-3 "HO" and "PLEASE WAIT" Do Not Go Off the Screen. 1. Phenomena "HO" or "PLEASE WAIT" display on the remote controller does not disappear, and no operation is performed even if the button is pressed.

  • Page 271: Air Conditioning Units Do Not Operate When The On Button Is Pressed

    [8-1 MA Remote Controller Problems ] 8-1-4 Air Conditioning Units Do Not Operate When the ON Button Is Pressed. 1. Phenomena Even if the operation button on the remote controller is pressed, the indoor and the outdoor units do not start running. 2.

  • Page 272: Me Remote Controller Problems

    [8-2 ME remote Controller Problems ] ME remote Controller Problems 8-2-1 The LCD Does Not Light Up. 1. Phenomena Even if the operation button on the remote controller is pressed, the display remains unlit and the unit does not start running. (Remote controller is not powered.) 2.

  • Page 273: The Lcd Momentarily Lights Up And Then Goes Off

    [8-2 ME remote Controller Problems ] 8-2-2 The LCD Momentarily Lights Up and Then Goes Off. 1. Phenomena When the remote controller operation SW is turned on, a temporary operation display is indicated, and the display lights out immediately. 2. Cause 1) The power is not supplied to the indoor unit.

  • Page 274: Ho" Or "Waiting For

    [8-2 ME remote Controller Problems ] 8-2-3 "HO" or "Waiting for ···" Does Not Go Off the Screen. 1. Phenomena "HO" or "Waiting for ···" display on the remote controller does not disappear, and no operation is performed even if the button is pressed.
  • Page 275 [8-2 ME remote Controller Problems ] 3. Check method and remedy Without using MELANS Are all the units in the system experiencing the same problem? Check the address of the ME remote controller on which "HO" is displayed. Check the address of the outdoor unit.

  • Page 276: 88", "Request Denied." Appears On The Lcd

    [8-2 ME remote Controller Problems ] 8-2-4 "88", "Request denied." Appears on the LCD. 1. Phenomena "88", "Request denied." appears on the remote controller when the address is registered or confirmed. 2. Cause, check method and remedy Cause Check method and remedy An error occurs when the address is registered or con- firmed.

  • Page 277: Refrigerant Control Problems

    [8-3 Refrigerant Control Problems ] Refrigerant Control Problems 8-3-1 Units in the Cooling Mode Do Not Operate at Expected Capacity. 1. Phenomena Although cooling operation starts with the normal remote controller display, the capacity is not enough. (1) Cause, check method and remedy Cause Check method and remedy Compressor frequency does not rise sufficiently.
  • Page 278 [8-3 Refrigerant Control Problems ] Cause Check method and remedy RPM error of the outdoor unit FAN Refer to the following page(s). [8-7 Troubleshooting Outdoor Unit Fan Problems] Motor failure or board failure, or airflow rate de- [7-3-3 Error Code [1302] (during operation)] crease due to clogging of the heat exchanger The fan is not properly controlled as the outdoor temperature cannot be precisely detected by the...

  • Page 279: Units In The Heating Mode Do Not Operate At Expected Capacity

    [8-3 Refrigerant Control Problems ] 8-3-2 Units in the Heating Mode Do Not Operate at Expected Capacity. 1. Phenomena Although heating operation starts with the normal remote controller display, the capacity is not enough. 2. Cause, check method and remedy Cause Check method and remedy Compressor frequency does not rise sufficiently.
  • Page 280 [8-3 Refrigerant Control Problems ] Cause Check method and remedy HBC LEV1 and 2 actuation failure Refer to the following page(s). [8-8-2 General Over- Sufficient hot water is not supplied on the HBC due view on LEV Operation (HBC)] to HBC LEV1, 2, and 3 actuation failure. Temperature reading error on the indoor unit piping Check the thermistor.

  • Page 281: Outdoor Units Stop At Irregular Times

    [8-3 Refrigerant Control Problems ] 8-3-3 Outdoor Units Stop at Irregular Times. 1. Phenomena Outdoor unit stops at times during operation. 2. Cause, check method and remedy Cause Check method and remedy The first stop is not considered as an error, as the Check the mode operated in the past by displaying unit turns to anti-restart mode for 3 minutes as a pre- preliminary error history on LED display with SW4.

  • Page 282: Checking Transmission Waveform And For Electrical Noise Interference

    [8-4 Checking Transmission Waveform and for Electrical Noise Interference ] Checking Transmission Waveform and for Electrical Noise Interference 8-4-1 M-NET Control is performed by exchanging signals between the outdoor unit and the indoor unit (ME remote controller) through M- NET transmission. Noise interference on the transmission line will interrupt the normal transmission, leading to erroneous op- eration.
  • Page 283 [8-4 Checking Transmission Waveform and for Electrical Noise Interference ] (3) Check method and remedy 1) Measures against noise Check the followings when noise exists on the wave or the errors described in (1) occur. Error code definition Remedy Check that the wiring 1.
  • Page 284 [8-4 Checking Transmission Waveform and for Electrical Noise Interference ] 8-4-2 MA Remote Controller The communication between the MA remote controller and the indoor unit is performed with current tone burst. (1) Symptoms caused by noise interference on the transmission line If noise is generated on the transmission line, and the communication between the MA remote controller and the indoor unit is interrupted for 3 minutes in a row, MA transmission error (6831) will occur.

  • Page 285: Pressure Sensor Circuit Configuration And Troubleshooting Pressure Sensor Problems

    [8-5 Pressure Sensor Circuit Configuration and Troubleshooting Pressure Sensor Problems ] Pressure Sensor Circuit Configuration and Troubleshooting Pressure Sensor Problems 8-5-1 Comparing the High-Pressure Sensor Measurement and Gauge Pressure Setting the digital display switch (SW4 (SW6-10: OFF) as follows will display the high-pressure sensor reading on the service LED (LED301) on the control board.
  • Page 286 [8-5 Pressure Sensor Circuit Configuration and Troubleshooting Pressure Sensor Problems ] 8-5-2 High-Pressure Sensor Configuration (Outdoor unit, HBC) (63HS1, PS1, PS3) The high pressure sensor consists of the circuit shown in the figure below. If DC 5V is applied between the red and the black wires, voltage corresponding to the pressure between the white and the black wires will be output, and the value of this voltage will be converted by the microcomputer.

  • Page 287: Comparing The Low-Pressure Sensor Measurement And Gauge Pressure

    [8-5 Pressure Sensor Circuit Configuration and Troubleshooting Pressure Sensor Problems ] 8-5-3 Comparing the Low-Pressure Sensor Measurement and Gauge Pressure Setting the digital display switch (SW4 (SW6-10: OFF) as follows will display the low-pressure sensor reading on the service LED (LED301) on the control board. 9 10 The figure at left shows that the switches 1 through 5 are set to ON and 6 through 10 are set to OFF.

  • Page 288: Low-Pressure Sensor Configuration (63Ls)

    [8-5 Pressure Sensor Circuit Configuration and Troubleshooting Pressure Sensor Problems ] 8-5-4 Low-Pressure Sensor Configuration (63LS) The low pressure sensor consists of the circuit shown in the figure below. If DC5V is applied between the red and the black wires, voltage corresponding to the pressure between the white and the black wires will be output, and the value of this voltage will be converted by the microcomputer.

  • Page 289: Troubleshooting Solenoid Valve Problems

    [8-6 Troubleshooting Solenoid Valve Problems ] Troubleshooting Solenoid Valve Problems Check whether the output signal from the control board and the operation of the solenoid valve match. Setting the self-diagnosis switch (SW4) as shown in the figure below causes the ON signal of each relay to be output to the LED's. Each LED shows whether the relays for the following parts are ON or OFF.

  • Page 290: Troubleshooting Outdoor Unit Fan Problems

    [8-7 Troubleshooting Outdoor Unit Fan Problems ] Troubleshooting Outdoor Unit Fan Problems (1) Fan motor (common items) The number of revolutions of the outdoor fan is controlled by inverter. Check the number of revolutions of the fan while mon- itoring the inverter output indicated by the self-diagnosis LED. The table below shows approximate numbers of revolutions of the fan at the full speed.

  • Page 291: Troubleshooting Lev, Fcv Problems

    [8-8 Troubleshooting LEV, FCV Problems ] Troubleshooting LEV, FCV Problems 8-8-1 General Overview on LEV Operation (Outdoor unit) LEV operation LEV are stepping-motor-driven valves that operate by receiving the pulse signals from the indoor and outdoor unit control boards. (1) Outdoor LEV (LEV2a, 2b, 2c, and 2d) The valve opening changes according to the number of pulses.
  • Page 292 [8-8 Troubleshooting LEV, FCV Problems ] 3) LEV valve closing and opening operation *When the power is turned on, the valve closing signal of 2200 pulses will be output from the outdoor unit circuit board to LEV to fix the valve position. It must be fixed at point A.
  • Page 293 [8-8 Troubleshooting LEV, FCV Problems ] (2) Outdoor LEV (LEV4, LEV9) The valve opening changes according to the number of pulses. 1) Connections between the outdoor control board and LEV9 (outdoor expansion valve) Outdoor control board DC 12V Brown Drive circuit Blue Orange Yellow...
  • Page 294 [8-8 Troubleshooting LEV, FCV Problems ] 8-8-2 General Overview on LEV Operation (HBC) LEV operation HBC LEVI, 2, and 3 (linear expansion valves) are driven by the pulse signal from the control board and are controlled by a stepping motor. (1) HBC LEV The valve opening changes according to the number of pulses.
  • Page 295 [8-8 Troubleshooting LEV, FCV Problems ] 3) LEV valve closing and opening operation * Upon power on, the HBC circuit board sends 3200 Hz pulse signals to the LEVs (HBC LEV 1, 2, and 3) to determine the valve position and bring the valve to the position as indicated by A in the diagram.

  • Page 296: Possible Problems And Solutions

    [8-8 Troubleshooting LEV, FCV Problems ] 8-8-3 Possible Problems and Solutions Malfunction Judgment method Remedy mode Microcomput- Disconnect the control board connector and connect the When the drive circuit Indoor unit, er driver circuit check LED as shown in the figure below. has a problem, replace Outdoor unit failure...

  • Page 297: General Overview On Fcv Operation (Indoor Unit)

    [8-8 Troubleshooting LEV, FCV Problems ] 8-8-4 General Overview on FCV Operation (Indoor unit) Flow control valve (FCV) operation The FCV is operated by a stepping motor, which operates by receiving a pulse signal from the indoor control board. (1) Indoor FCV The FCV position changes in response to the pulse signal.
  • Page 298 [8-8 Troubleshooting LEV, FCV Problems ] 3) FCV operation Close Open Fully open valve (85 pulses) Fully close valve (770 pulses) No. of pulses Valve opening degree (2) Judgment methods and possible failure mode Malfunction mode Judgment method Remedy (1) Loose connector Check for connector connection failure.

  • Page 299: Coil Removal Instructions

    [8-8 Troubleshooting LEV, FCV Problems ] 8-8-5 Coil Removal Instructions (1) Outdoor unit LEV (LEV4 and 9) 1) Component As shown in the figure, the outdoor LEV is made in such a way that the coils and the body can be separated. Body Coils Stopper...
  • Page 300 [8-8 Troubleshooting LEV, FCV Problems ] (2) Outdoor unit LEV (LEV2a, 2b, 2c, and 2d) 1) Components The outdoor unit LEV consists of a coil and a valve body that can be separated from each other. Body Stopper Coil Lead wire 2) Removing the coil Securely hold the LEV at the bottom (as indicated by A in the figure), and turn the coil.

  • Page 301: Troubleshooting Problems With Major Components On Hbc

    [8-9 Troubleshooting Problems with Major Components on HBC ] Troubleshooting Problems with Major Components on HBC 8-9-1 Pressure Sensor Troubleshooting flow chart for pressure sensor START Check the connectors on pressure sensor PS1, PS3, Pw1, Pw2, Pw3, Pw4 for proper connections. Repair the fault.
  • Page 302 [8-9 Troubleshooting Problems with Major Components on HBC ] 1) Check the self-diagnosis switch (Outdoor control board SW4 (SW6-10:OFF)). Measurement data Symbol SW4 setting value Outdoor high pressure 63HS1 9 10 Outdoor low pressure 63LS 9 10 The figure at left shows that the switches 1 through 5 are set to ON and 6 through 10 are set to OFF. 9 10 2) Check the connector for P1 on the HBC control board for proper connections.

  • Page 303: Temperature Sensor

    [8-9 Troubleshooting Problems with Major Components on HBC ] 8-9-2 Temperature Sensor Troubleshooting instructions for thermistor START Note 1 Pull out the thermistor connector in trouble from the board. Note 2 Measure the temperature of the thermistor in trouble. (actual measurement value) Note 2 Check the thermistor resistor.

  • Page 304: Troubleshooting Flowchart For Levs, Solenoid Valves, And Valve Blocks

    [8-9 Troubleshooting Problems with Major Components on HBC ] 8-9-3 Troubleshooting Flowchart for LEVs, Solenoid Valves, and Valve Blocks (1) LEV No cooling capacity No heating capacity Check whether the electric expansion valve and the solenoid valve connector are not disconnected or not loose. Fault is found.
  • Page 305 [8-9 Troubleshooting Problems with Major Components on HBC ] Troubleshooting flow chart for solenoid valve body Start Check for pins not fully inserted on the connector and check the colors of the lead wires visually. Intermediate connector Control board When LEV is fully closed : tick sound When LEV is fully open : no sound Brown Brown...

  • Page 306: Water Pump Control

    [8-9 Troubleshooting Problems with Major Components on HBC ] 8-9-4 Water Pump Control Check the connector and make sure that it is connected properly. Pump failure as judged based on the inverter-related failure judgment may be caused by one or more of the following factors. Coil failure - replace pump.

  • Page 307: 8-10 Troubleshooting Inverter Problems

    [8-10 Troubleshooting Inverter Problems ] 8-10 Troubleshooting Inverter Problems 8-10-1 Inverter-Related Problems and Solutions Replace only the compressor if only the compressor is found to be defective. (Overcurrent will flow through the inverter if the compressor is damaged, however, the power supply is automatically cut when overcurrent is detected, protecting the inverter from damage.
  • Page 308 [8-10 Troubleshooting Inverter Problems ] Error display/failure condition Measure/inspection item Inverter related errors Implement solutions that correspond to the error codes or preliminary 4250, 4255, 4256, 4220, 4225, 4226, 4230, 4240, 4260, 5301, error codes. [7-1 Error Code and Preliminary Error Code Lists] 5305, 5306, 0403 Main power breaker trip Refer to the following page(s).
  • Page 309 [8-10 Troubleshooting Inverter Problems ] 8-10-2 Checking the Inverter Board Error Detection Circuit Items to be checked Phenomena Remedy Stop the unit. Overcurrent error Replace the INV board. Remove power supply. Error code: 4250 Detail code: No. 101, 104, 105, 106, and Disconnect the inverter Logic error Replace the INV board.

  • Page 310: Checking The Inverter For Damage At No-Load

    [8-10 Troubleshooting Inverter Problems ] 8-10-4 Checking the Inverter for Damage at No-Load Items to be checked Phenomena Remedy Stop the unit. Inverter-related problems are detected. Set SW7-1 on the MAIN board to ON, Remove power supply. and go to [8-10-2 Checking the Invert- er Board Error Detection Circuit].

  • Page 311: Checking The Inverter For Damage During Compressor Operation

    [8-10 Troubleshooting Inverter Problems ] 8-10-5 Checking the Inverter for Damage during Compressor Operation Items to be checked Phenomena Remedy Put the outdoor unit into opera- Overcurrent-related problems occur im- Check items [8-10-2 Checking the tion. mediately after compressor startup. Inverter Board Error Detection Cir- Check the inverter output volt- Error code : 4250...
  • Page 312 [8-10 Troubleshooting Inverter Problems ] Items to be checked Phenomena Remedy An overcurrent error occurs during oper- [8-10-6 Checking the Converter for ation. Damage during Compressor Oper- Error code : 4250 ation] Detail code : 121,122 An overcurrent error occurs immediately Check for refrigerant flooding.

  • Page 313: Checking The Fan Motor For Ground Fault And Coil Resistance Problems

    [8-10 Troubleshooting Inverter Problems ] 8-10-7 Checking the Fan Motor for Ground Fault and Coil Resistance Problems Items to be checked Phenomena Remedy Remove fan motor winding. Check Fan motor insulation failure. Change fan motor. insulation resistance and coil resis- If <...

  • Page 314: Checking The Fan Board For Damage With Load

    [8-10 Troubleshooting Inverter Problems ] 8-10-10 Checking the Fan Board for Damage with Load Items to be checked Phenomena Remedy Turn off breaker. The operation stops within 20 seconds Check for fan motor lock. of startup and a step-out error or an →If locked, change for fan motor.
  • Page 315 [8-10 Troubleshooting Inverter Problems ] 8-10-11 Checking the Pump Motor for Ground Fault and Coil Resistance Problems Items to be checked Phenomena Remedy Remove pump motor wiring. Check Pump motor insulation failure. Replace the pump. insulation resistance and coil resis- If <...

  • Page 316: Checking The Pump Inv Board For Damage (During Pump Operation)

    [8-10 Troubleshooting Inverter Problems ] 8-10-14 Checking the Pump INV Board for Damage (During pump operation) Items to be checked Phenomena Remedy Operate the outdoor unit and the Overcurrent-related error occurs im- a. Check that the results of the HBC. mediately after the startup of the check items in [8-10-11 Checking Wait until the inverter output frequen-...

  • Page 317: Solutions For The Main Earth Leakage Breaker Trip

    [8-10 Troubleshooting Inverter Problems ] 8-10-17 Solutions for the Main Earth Leakage Breaker Trip Measure the secondary voltage of the main power earth leakage breaker before checking because the main power earth leak- age breaker may have been broken. Items to be checked Phenomena Remedy Check the earth leakage breaker...

  • Page 318: Simple Check On Inverter Circuit Components

    [8-10 Troubleshooting Inverter Problems ] 8-10-18 Simple Check on Inverter Circuit Components Turn off the power to the unit, and leave it turned off for at least 10 minutes. Check that the voltage across pins 1 (+) and 5 (-) of the connector RYPN1 is 20 VDC or less before removing components from the control box. Part name Judgment method IGBT module...

  • Page 319: Troubleshooting Problems With Igbt Module

    [8-10 Troubleshooting Inverter Problems ] 8-10-19 Troubleshooting Problems with IGBT Module Measure the resistances between each pair of terminals on the IGBT with a tester, and use the results for troubleshooting. The terminals on the INV board are used for the measurement. 1) Notes on measurement Check the polarity before measuring.
  • Page 320 [8-10 Troubleshooting Inverter Problems ] Reference resistance value Black (+) SC-PL CN-N SC-L1 SC-L2 SC-L3 SC-PL 5-200 Ω 5-200 Ω 5-200 Ω CN-N ∞ ∞ ∞ Red (-) SC-L1 ∞ 5-200 Ω SC-L2 ∞ 5-200 Ω SC-L3 ∞ 5-200 Ω Black (+) SC-P1L CN-N...
  • Page 321 [8-10 Troubleshooting Inverter Problems ] Reference resistance value Black (+) SC-P CN-N SC-L1 SC-L2 SC-L3L SC-P 5-200 Ω 5-200 Ω 5-200 Ω CN-N ∞ ∞ ∞ Red (-) SC-L1 ∞ 5-200 Ω SC-L2 ∞ 5-200 Ω SC-L3 ∞ 5-200 Ω Black (+) SC-P1 CN-N...
  • Page 322 [8-10 Troubleshooting Inverter Problems ] Reference resistance value Black (+) SC-L1 SC-L2 SC-L3 SC-B SC-L FT100 CN-N SC-L1 ∞ 5-200 Ω SC-L2 ∞ 5-200 Ω SC-L3 ∞ 5-200 Ω Red (-) SC-B ∞ SC-L 5-200 Ω 5-200 Ω 5-200 Ω FT100 5-200 Ω...

  • Page 323: Checking The Fan Inverter Heatsink For Clogging

    [8-10 Troubleshooting Inverter Problems ] 8-10-20 Checking the Fan Inverter Heatsink for Clogging Check the fan inverter heatsink for clogging by removing part of the duct and checking inside the duct. To remove the duct, follow the procedures 1) through 3) below. Reassemble the components in the reverse order as they were removed.

  • Page 324: 8-11 Control Circuit

    [8-11 Control Circuit ] 8-11 Control Circuit 8-11-1 Control Power Supply Function Block 1) PURY-(E)M200 - (E)M300YNW-A1 Power supply system (380-415 VAC) Control system (5-30 VDC) Noise filter board Inverter board Noise filter Smoothing capacitor Compressor Rectifier Inverter AC Power source Fuse Inverter Fuse...
  • Page 325 [8-11 Control Circuit ] 2) PURY-(E)M350 - (E)M450YNW-A1 Power supply system (380-415 VAC) Control system (5-30 VDC) Inverter board Noise filter board Capacitor board Noise filter Rectifier Smoothing capacitor Inverter Compressor AC Power source (380-415 V) Fuse Fuse Power-supply Inverter terminal block drive circuit Surge protector...
  • Page 326 [8-11 Control Circuit ] 3) PURY-(E)M500YNW-A1 Power supply system (380-415 VAC) Control system (5-30 VDC) Inverter board Noise filter board Noise filter Smoothing capacitor Rectifier Inverter Compressor AC Power source (380-415 V) Fuse 15 V power supply Converter Fuse Converter Power-supply drive circuit terminal block...
  • Page 327 [8-11 Control Circuit ] 4) CMB-WM350, 500F-AA Power supplysystem (220-240 VAC, 260-338 VDC) Control system (5-30 VDC) PS board Inverter board Fuse Fuse Noise Rectifier Smoothing Current Pump1 Inverter Filter sensor reactor diode capacitor AC Power source (220-240 VAC) X511 Terminal block for Fuse Fuse...
  • Page 328 [8-11 Control Circuit ] 6) CMB-WM108V-BB Power supply system (220-240 VAC, 260-338 VDC) Control system (5-30 VDC) SUB-PS board Fuse Noise Rectifier Smoothing DC-DC 13 V power supply Filter capacitor converter diode AC Power source (220-240 VAC) Terminal block for Surge power source protector...

  • Page 329: Troubleshooting Problems With Outdoor Unit Transmission Power Supply Circuit

    [8-11 Control Circuit ] 8-11-2 Troubleshooting Problems with Outdoor Unit Transmission Power Supply Circuit 1) PURY-(E)M200 - (E)M450YNW-A1 Check the voltage at the indoor/outdoor transmission terminal block (TB3) of outdoor unit. Check whether the transmission line is disconnected, 24-30 VDC check for contact failure, and repair the problem.
  • Page 330 [8-11 Control Circuit ] Check for conductivity between TB12 and pin 1 of CN1 and between TB14 and pin 3 of CN1. Is there conductivity between them? Replace the noise filter board. Check the wiring between the noise filter board and TB1 of power-supply board, and also check connectors L2-N of TB1, TB12, and TB14.
  • Page 331 [8-11 Control Circuit ] 2) PURY-(E)M500YNW-A1 Check the voltage at the indoor/outdoor transmission terminal block (TB3) of outdoor unit. Check whether the transmission line is disconnected, 24-30 VDC check for contact failure, and repair the problem. Check the voltage at TB3 after removing transmission line from TB3.
  • Page 332 [8-11 Control Circuit ] Check for conductivity between TB12 and pin 1 of CN1 and between TB14 and pin 3 of CN1. Check TB32 and TB34 on the noise filter for Is there conductivity between them? loose screws. Any loose Replace the noise filter screws? Check the wiring between the noise filter board and...

  • Page 333: 8-12 Measures For Refrigerant Leakage

    [8-12 Measures for Refrigerant Leakage ] 8-12 Measures for Refrigerant Leakage 1. Leak spot: In the case of extension pipes and HBC (Cooling season) 1) Mount a pressure gauge on the service check joint (CJ2) on the low-pressure side. 2) Connect the service port on the high-pressure gas service valve (BV2) to that on the low-pressure gas service valve (BV1) using a charge hose.
  • Page 334 [8-12 Measures for Refrigerant Leakage ] 3. Leak spot: In the case of extension pipe and HBC (Heating season) (1) Run all the indoor units in heating test run mode. 1) To run the indoor unit in test run mode, set SW4 (769) on the outdoor unit control board to ON. 2) Change the setting of the remote controller for all the indoor units to the heating mode.

  • Page 335: Parts Replacement Instructions (Outdoor Unit)

    [8-13 Parts Replacement Instructions (Outdoor Unit) ] 8-13 Parts Replacement Instructions (Outdoor Unit) 8-13-1 Ensuring Maintenance Space (Preparation for the Maintenance of Refrigerant Circuit Parts) 1. S-module Take the following procedures to ensure sufficient maintenance space and good visibility. (1) Remove the front panel from the unit by unscrewing the eight screws. (See Figure 1.) *Figure 1 shows the unit without the front panel.
  • Page 336 [8-13 Parts Replacement Instructions (Outdoor Unit) ] (11) Loosen the three cable straps holding the motor wiring outside and at the bottom of the main control box, and remove the wire from the two wire saddles. (See Figure 8.) (12) Loosen the two cable straps holding the strong electrical wiring outside the main control box. (See Figure 9.) (13) Cut the cable tie and loosen the two welding clamps holding the strong electrical wiring at the bottom of the main control box.
  • Page 337 [8-13 Parts Replacement Instructions (Outdoor Unit) ] 2. L-module (1) Remove the front panel from the unit by unscrewing the 14 screws. (See Figure 1.) *Figure 1 shows the unit without the front panel. (2) Remove the fin guard by unscrewing the 12 screws. (See Figure 1.) (3) Remove the cable straps holding the weak and strong electrical wirings.
  • Page 338 [8-13 Parts Replacement Instructions (Outdoor Unit) ] 3. XL-module (1) Remove the front panel from the unit by unscrewing the 14 screws. (See Figure 1.) (2) Remove the external temperature sensor wiring from the left drain pan by cutting the two cable ties. Unhook the pipe cover from the left drain pan.

  • Page 339: Notes On Wiring Installation

    [8-13 Parts Replacement Instructions (Outdoor Unit) ] 8-13-2 Notes on Wiring Installation If wiring was disconnected during maintenance, reconnect the wiring as follows. Isolate the strong and the weak electrical wiring to avoid noise interference. (1) S-module FRONT VIEW CONTROL BOX CONTROL BOX (MAIN) (INVERTER)
  • Page 340 [8-13 Parts Replacement Instructions (Outdoor Unit) ] BOTTOM VIEW CONTROL BOX Clamp the wires in place. (MAIN) Thread the wires through the edge saddle. Fix the wiring in place with cable ties. Thread the wires through the edge saddle.
  • Page 341 [8-13 Parts Replacement Instructions (Outdoor Unit) ] (2) L-module FRONT VIEW PILLAR C CONTROL BOX Fix the wires in place with cable straps. Fix the wires in place with cable straps. Bundle excess wiring inside the control box, and fix it in place with a Fix the wires in place with cable straps.
  • Page 342 [8-13 Parts Replacement Instructions (Outdoor Unit) ] (3) XL-module FRONT VIEW CONTROL BOX Fix the wires in place with cable straps. Fix the wires in place with cable straps. Bundle excess wiring inside the Fix the wires in place with cable control box, and fix it in place with a straps.
  • Page 343 [8-13 Parts Replacement Instructions (Outdoor Unit) ] 8-13-3 Four-way Valve Replacement Procedure 1. S, L-module (Applicable to four-way valves 21S4a and 21S4b) Explained below is the procedure for replacing four-way valve (21S4a) (on the left when seen from the front of the unit) and four-way valve (21S4b) (on the right when seen from the front of the unit).
  • Page 344 [8-13 Parts Replacement Instructions (Outdoor Unit) ] *Notes on replacing refrigerant circuit components (four-way valve, solenoid valve, and LEV) Be sure to perform non-oxidized brazing. Before heating the pipes, wrap the refrigerant circuit components with a wet towel to keep the temperature of the components from rising above 120°C.
  • Page 345 [8-13 Parts Replacement Instructions (Outdoor Unit) ] (9A) Remove four-way valve (21S4a) by removing the braze from the area above four-way valve (21S4a) as shown in Figure Remove the braze here. Four-way valve (21S4a) Figure 9 (10A) Mount a new four-way valve (21S4a). Figure 10 shows how to position a new four-way valve. Four-way valve (21S4a) Four-way valve (21S4b) When seen from above, four-way valves (21S4a and 21S4b) are...
  • Page 346 [8-13 Parts Replacement Instructions (Outdoor Unit) ] (13A) Install the pipe below four-way valve (21S4a) and in the middle by brazing at the three areas shown in Figure 13. Four-way valve (21S4a) Use the parts included with four-way valve (21S4a). Area to be brazed Figure 13...
  • Page 347 [8-13 Parts Replacement Instructions (Outdoor Unit) ] Replacement procedure for the four-way valve (21S4b) (15B) Cut the pipe below four-way valve (21S4b) and in the middle with a pipe cutter as shown in the figure. After cutting the pipe where indicated in the figure, remove the braze at the two areas shown in Figure 15. Four-way valve (21S4b) Four-way valve (21S4b) Remove the braze here.
  • Page 348 [8-13 Parts Replacement Instructions (Outdoor Unit) ] (18B) To make it easier to connect four-way valve (21S4b), cut the pipe between the section above four-way valve (21S4b) and the pipe bend with a pipe cutter. Cut the pipe with an expanded end that is included with four-way valve (21S4b) to the same length as the pipe that was removed from the on-site pipe.
  • Page 349 [8-13 Parts Replacement Instructions (Outdoor Unit) ] 2. XL-module (four-way valve (21S4a, 21S4b, and 21S4c)) Explained below is the procedure for replacing four-way valve (21S4a) (on the left when seen from the front of the unit), four-way valve (21S4b) (in the middle when seen from the front of the unit), and four-way valve (21S4c) (on the right when seen from the front of the unit).
  • Page 350 [8-13 Parts Replacement Instructions (Outdoor Unit) ] *Notes on replacing refrigerant circuit components (four-way valve, solenoid valve, and LEV) Be sure to perform non-oxidized brazing. Before heating the pipes, wrap the refrigerant circuit components with a wet towel to keep the temperature of the components from rising above 120°C.
  • Page 351 [8-13 Parts Replacement Instructions (Outdoor Unit) ] (7A) Remove the braze from the three areas below four-way valve (21S4a) as shown in Figure 8. Figure 8 (8A) Mount a new four-way valve (21S4a). Replacement procedure for the four-way valve (21S4b) (9B) Follow the steps (6A) through (7A).

  • Page 352: Replacement Procedure For The Check Valve Block Assembly

    [8-13 Parts Replacement Instructions (Outdoor Unit) ] 8-13-4 Replacement Procedure for the Check Valve Block Assembly 1. S, L-module Explained below is the procedure for replacing the check valve block assembly. (1) Remove the top compressor cover by unscrewing the three screws. (See Figure 1.) Remove the compressor cover by unhooking the hooks on the back.
  • Page 353 [8-13 Parts Replacement Instructions (Outdoor Unit) ] (7) Cut the bands on the TH3 wiring, and remove the pipe covers and rubber spacer on the heat-exchanger side. (See Figure 7.) Rubber spacer and band Rubber spacer and band TH3 wiring, pipe cover Remove the pipe cover adjacent to the brazed area of the heat exchanger.
  • Page 354 [8-13 Parts Replacement Instructions (Outdoor Unit) ] (10) Remove the braze at the two areas circled in Figure 10 to remove SV2 assembly. (See Figure 10.) Remove the braze here. Remove the braze here. SV2 assembly Figure 10 (11) Cut the pipe with a pipe cutter at the area shown in Figure 11. Remove the braze at the area circled in Figure 11 to remove LEV4 assembly.
  • Page 355 [8-13 Parts Replacement Instructions (Outdoor Unit) ] (12) Remove the braze at the three areas circled in Figure 12 to remove LEV2a and 2b assembly. (See Figure 12.) LEV2a LEV2b LEV2a LEV2b Remove the braze here. Remove the braze here. Remove the braze here.
  • Page 356 [8-13 Parts Replacement Instructions (Outdoor Unit) ] (14) Cut the pipe below four-way valves (21S4a and 21S4b) with a pipe cutter as shown in the figure. Remove the braze at the areas circled in the figure to remove 21S4a and 21S4b assemblies. Remove the braze here.
  • Page 357 [8-13 Parts Replacement Instructions (Outdoor Unit) ] (15) Remove the braze from the pipe where circled in the figure, and unscrew the two screws on the check valve block fixing plate to remove the check valve block assembly. Gas-liquid separator A (2 areas to remove braze from. 2 Gas-liquid separator B screws to be removed.
  • Page 358 [8-13 Parts Replacement Instructions (Outdoor Unit) ] (17) Re-place the four-way valves (21S4a and 21S4b) that were removed in step (14). Figure 17-1 shows how to position a new four-way valves. Replace the center pipe below four-way valves (21S4a and 21S4b). (3 areas to remove braze from. 2 areas to be brazed. See Figure 17-2.) Four-way valve 21S4b Four-way valve...
  • Page 359 [8-13 Parts Replacement Instructions (Outdoor Unit) ] (20) Re-place the check valve assemblies (21S4a and 21S4b) whose pipes were replaced in step (17). Area to be brazed Four-way valve (21S4a) Four-way valve (21S4b) Area to be brazed Area to be brazed LEV2d Area to be brazed (Applicable only to gas-liquid separator B)
  • Page 360 [8-13 Parts Replacement Instructions (Outdoor Unit) ] (21) Re-place the LEV4 assembly that was removed in step (11) as it was. (3 areas to be brazed. See Figure 21.) Area to be brazed Area to be brazed Injection pipe Injection pipe LEV4 Area to be brazed...
  • Page 361 [8-13 Parts Replacement Instructions (Outdoor Unit) ] 2. XL-module Explained below is the procedure for replacing the check valves. (See Figure 1.) Check valve (CV2a/b) Figure 1 (1) Remove three pipe covers. (See Figure 2.) Pipe cover Figure 2 (2) Cut the pipe near the check valve in two areas where circled. (See Figure 3.) Area to be cut Figure 3 *Notes on replacing refrigerant circuit parts (check valve block assemblies, four-way valves, solenoid valves, and LEVs)
  • Page 362 [8-13 Parts Replacement Instructions (Outdoor Unit) ] (3) Remove the braze from the pipe where circled in the figure. (See Figure 4.) Figure 4 (4) Remove the braze from the pipe where circled in the figure. (See Figure 5.) Figure 5 (5) Remove the check valve assembly (CV2a/b) from the area indicated in Figure 6.
  • Page 363 [8-13 Parts Replacement Instructions (Outdoor Unit) ] 8-13-5 Compressor Replacement Procedure Explained below are the procedures for replacing the compressor. Secure sufficient work space before starting replacement work. (See 8-13-1 Ensuring maintenance space (Preparation for the Maintenance of Refrigerant Circuit Parts).) (1) Remove the top compressor cover by unscrewing the three screws.
  • Page 364 [8-13 Parts Replacement Instructions (Outdoor Unit) ] (9) Remove the pipe cover and the damper, and cut the suction pipe where indicated in Figure 9. (10) Remove the pipe covers, and then remove the braze. (See Figure 10.) * Do not force the injection pipe to deform. (11) Remove the compressor discharge pipe by cutting the pipe where indicated in Figure 11 or by removing the braze.

  • Page 365: Removal Instructions For The Control Box

    [8-13 Parts Replacement Instructions (Outdoor Unit) ] 8-13-6 Removal Instructions for the Control Box 1. S module (INV box) [Removing the left outside panel] [Removing the left inside panel] Unscrew the four screws indicated Unscrew the screw indicated with an with arrows in Figure 1 to remove the arrow in Figure 2-a (located to the left left outside panel.
  • Page 366 [8-13 Parts Replacement Instructions (Outdoor Unit) ] [Removing refrigerant cooling pipes] Remove the braze from the two areas indicated by the arrows in Figure 6-a. Before removing the pipes, collect the refrigerant. Protect the surrounding components from the brazing torch flame as necessary. [Figure 6] [Figure 6-a] [Removing the remaining relevant components]...
  • Page 367 [8-13 Parts Replacement Instructions (Outdoor Unit) ] 2. L/XL module [Removing the duct] Unscrew the two screws indicated with arrows in Figure 1-a, and pull up the duct to remove it. (Figure 1-b shows the unit after the duct was removed.) *The same procedures apply to both the L and the XL modules.
  • Page 368 [8-13 Parts Replacement Instructions (Outdoor Unit) ] 8-13-7 Maintenance Procedure for the Drain Pan 1. S-module [Drain pan removal procedure] (1) Remove the front panel from the unit by unscrewing the eight screws. (See Figure 1.) (2) Cut the cable tie, unscrew the screw, and pull out the drain pan cover toward the right. (See Figure 3.) (3) Remove the two rod holders holding the check joints in place, using a wrench.
  • Page 369 [8-13 Parts Replacement Instructions (Outdoor Unit) ] [Drain pan mounting procedure] *Reuse the drain pan mounting screws that were removed from the replaced drain pan. (M5 x 16 mm with a nylon washer) (1) Screw down the drain pan with two screws. (See Figure 7.) (2) Hold the check joints to the drain pan with two rod holders.
  • Page 370 [8-13 Parts Replacement Instructions (Outdoor Unit) ] 2. L-module [Drain pan removal procedure] (1) Remove the front panel from the unit by unscrewing the 14 screws. (See Figure 1.) (2) Remove the fin guard and the center pillar by unscrewing the 11 screws shown in Figure 2. Remove the cable straps from the center pillar.
  • Page 371 [8-13 Parts Replacement Instructions (Outdoor Unit) ] [Drain pan mounting procedure] *Reuse the drain pan mounting screws from the replaced drain pan. (M5 x 16 mm with a nylon washer) (1) Screw down the drain pan with two screws. (See Figure 7.) (2) Hold the check joints to the drain pan with two rod holders.
  • Page 372 [8-13 Parts Replacement Instructions (Outdoor Unit) ] 3. XL-module [Drain pan removal procedure] (1) Remove the front panel from the unit by unscrewing the 14 screws. (See Figure 1.) (2) Remove the external temperature sensor wiring from the left drain pan by cutting the two cable ties. Unhook the pipe cover from the left drain pan.
  • Page 373 [8-13 Parts Replacement Instructions (Outdoor Unit) ] [Drain pan mounting procedure] *Reuse the drain pan mounting screws that were removed from the replaced drain pan. (M5 x 16 mm with a nylon washer) (1) Screw down the right drain pan with two screws. (See Figure 7.) (2) Screw down the left drain pan with two screws.

  • Page 374: Maintenance Procedures For The Heat Exchanger

    [8-13 Parts Replacement Instructions (Outdoor Unit) ] 8-13-8 Maintenance Procedures for the Heat Exchanger 1. S-module Rear heat exchanger Front heat exchanger Front of the unit Figure 1 (1) Remove the front panel from the unit by unscrewing the 8 screws. (See Figure 2.) (2) Remove the fin guard by unscrewing the 6 screws.
  • Page 375 [8-13 Parts Replacement Instructions (Outdoor Unit) ] (8) Remove the fan guard by unscrewing the 6 screws. (See Figure 7.) (9) Insert a spacer between the main control box and the heat exchanger. (10) Remove the motor ASSY by unscrewing the 8 screws, using caution not to damage the motor wiring or the fan. (See Figure 8.) Motor ASSY Fan guard...
  • Page 376 [8-13 Parts Replacement Instructions (Outdoor Unit) ] (14) To remove the front heat exchanger, first remove the front, left, and right frames by unscrewing the 10 screws. (See Figure 11.) To remove the rear heat exchanger, remove the rear frame in addition to the front, left, and the right frames by unscrewing the 12 screws.
  • Page 377 [8-13 Parts Replacement Instructions (Outdoor Unit) ] (18) Before removing the front heat exchanger, protect the surrounding electrical components and the pipe cover with a recommended cloth soaked in water, and then remove the braze from four areas. (See Figures 13 and 14.) To remove the rear heat exchanger, remove the braze from four areas.
  • Page 378 [8-13 Parts Replacement Instructions (Outdoor Unit) ] (19) To remove the front heat exchanger, loosen the screws on the right side of the right rear pillar. (4 screws on a standard model or 3 screws on a high-efficiency model) (See Figure 17.) To remove the rear heat exchanger, loosen the screws on the back of the right rear pillar.
  • Page 379 [8-13 Parts Replacement Instructions (Outdoor Unit) ] 2. L-module Rear heat exchanger Front of the unit Front heat exchanger Figure 1 (1) Remove the two front panels from the unit by unscrewing the 14 screws. (See Figure 2.) (2) Remove the fin guard by unscrewing the 12 screws. (See Figure 2.) (3) Remove the cable straps holding the weak and strong electrical wirings.
  • Page 380 [8-13 Parts Replacement Instructions (Outdoor Unit) ] (9) Remove the fan guard by unscrewing the 12 screws. (See Figure 7.) (10) Insert a spacer between the control box and the heat exchanger. (11) Remove the motor ASSY by unscrewing the 16 screws, using caution not to damage the motor wiring or the fan. (See Figure 8.) Fan guard Motor ASSY...
  • Page 381 [8-13 Parts Replacement Instructions (Outdoor Unit) ] (15) To remove the front heat exchanger, first remove the front, left, right, and center frames by unscrewing the 14 screws. (See Figure 11.) To remove the rear heat exchanger, remove the rear frame in addition to the front, left, right, and center frames by unscrewing the 16 screws.
  • Page 382 [8-13 Parts Replacement Instructions (Outdoor Unit) ] (19) Before removing the front heat exchanger, protect the surrounding electrical components and the pipe cover with a recommended felt soaked in water, and then remove the braze from four areas. (See Figures 13 and 14.) To remove the rear heat exchanger, remove the braze from four areas.
  • Page 383 [8-13 Parts Replacement Instructions (Outdoor Unit) ] (20) To remove the front heat exchanger, loosen the screws on the right side of the right rear pillar. (4 screws on a standard model or 3 screws on a high-efficiency model) (See Figure 17.) To remove the rear heat exchanger, loosen the screws on the back of the right rear pillar.
  • Page 384 [8-13 Parts Replacement Instructions (Outdoor Unit) ] (22) After removing the heat exchangers, dispose of the front and the rear heat exchanger supports. (See Figures 21 and 22.) The front and the rear heat exchanger supports do not need to be installed. (The front and the rear heat exchanger supports are for suppressing vibration during transportation.) Center pillar Front heat exchanger...
  • Page 385 [8-13 Parts Replacement Instructions (Outdoor Unit) ] 3. XL-module Left rear heat exchanger Right rear heat exchanger Front heat exchanger Front of the unit Figure 1 (1) Remove the two front panels from the unit by unscrewing the 14 screws. (See Figure 2.) (2) Remove the fin guard by unscrewing the 12 screws.
  • Page 386 [8-13 Parts Replacement Instructions (Outdoor Unit) ] (11) Before removing the front heat exchanger, protect the surrounding electrical components and the pipe cover with a recommended felt soaked in water, and then remove the braze from four areas. (See Figures 8 and 9.) To remove the right and left rear heat exchangers, remove the braze from four areas.
  • Page 387 [8-13 Parts Replacement Instructions (Outdoor Unit) ] (12) Remove the front pillar by unscrewing the 7 screws. (See Figure 14.) (13) Disconnect the TH7 sensor holder from the front pillar. (See Figure 14 Rear.) Connector Front pillar Front heat exchanger Front pillar Rear Figure 14...
  • Page 388 [8-13 Parts Replacement Instructions (Outdoor Unit) ] (16) To remove the front heat exchanger, unscrew the screws on the front of the right front pillar. (4 screws on a standard model or 3 screws on a high-efficiency model) (See Figure 17.) To remove the left rear heat exchanger, unscrew the screws on the left side of the left front pillar and the screws on the front of the center pillar (7 screws on a standard model or 8 screws on a high-efficiency model.) (See Figures 18 and 19.) To remove the right rear heat exchanger, unscrew the screws on the right side of the right front pillar and the screws on...
  • Page 389 [8-13 Parts Replacement Instructions (Outdoor Unit) ] (17) Remove the heat exchanger by diagonally lifting it up, using caution not to damage the fins or the pipes. Right rear heat exchanger Left rear heat exchanger Front heat exchanger Removing the front heat exchanger Removing the right-rear and left-rear (Figure 21) heat exchangers (Figure 22)
  • Page 390 [8-13 Parts Replacement Instructions (Outdoor Unit) ] 8-13-9 Accumulator Replacement Procedure 1. S, L-module (1) Remove the front heat exchanger. Refer to 8-13-8 Maintenance Procedures for the Heat Exchanger for details. (2) Remove the top, front, and right compressor covers. Refer to 8-13-5 Compressor Replacement Procedure for details. (3) Remove the duct from the control box.
  • Page 391 [8-13 Parts Replacement Instructions (Outdoor Unit) ] (8) Remove the braze at the four areas on the accumulator inlet and outlet pipes shown in Figure 7. Inlet pipe Outlet pipe S-module outlet pipe L-module outlet pipe Figure 7 (9) Re-place the accumulator in the reverse order as it was removed. Re-place the components that were removed as they were.
  • Page 392 [8-13 Parts Replacement Instructions (Outdoor Unit) ] 2. XL-module (1) Remove the front heat exchanger. Refer to 8-13-8 Maintenance Procedures for the Heat Exchanger for details. (2) Remove the top, front, and right compressor covers. Refer to 8-13-5 Compressor Replacement Procedure for details. (3) Remove the fixing plate 1 above four-way valve (21S4b), saddle, and rubber spacer by unscrewing the three screws shown in Figure 8.
  • Page 393 [8-13 Parts Replacement Instructions (Outdoor Unit) ] (7) For the four-pipe piping on the back of the accumulator, follow the procedures below. Remove the braze at the four areas on the four pipes on the back of the accumulator. (See Figure 12.) Remove the braze at the six areas that are located on the right side of the four pipes on the back of the accumulator.

  • Page 394: Hbc Maintenance Instructions (Applicable To Main And Sub Hbcs)

    [8-14 HBC Maintenance Instructions (Applicable to main and sub HBCs) ] 8-14 HBC Maintenance Instructions (Applicable to main and sub HBCs) 8-14-1 Valve Block VB3 (valve block) is driven by the pulse signal from the VB board and are controlled by a stepping motor. 1) VB board and valve block (VB3) Valve block Circuit board...

  • Page 395: Instructions For Debris Removal Operation

    [8-14 HBC Maintenance Instructions (Applicable to main and sub HBCs) ] 8-14-2 Instructions for Debris Removal Operation This operation removes the debris that may have been introduced during installation from the water circuit. Perform this operation after completion of the following. Automatic air vent •...
  • Page 396 [8-14 HBC Maintenance Instructions (Applicable to main and sub HBCs) ] 2. Debris removal operation [When an outdoor unit is connected, and refrigerant piping work, evacuation of refrigerant circuits, and refrigerant charging have been completed] 1. Turn on DIP SW002-1 if there is a possibility that the debris may have been introduced into the water circuits during piping work on site. Use DIP SW002-1 to start the debris removal operation.
  • Page 397 [8-14 HBC Maintenance Instructions (Applicable to main and sub HBCs) ] 4. Turn on DIP SW002-6. Then, slowly turn the water vent screw of the two water pumps at the lower part inside the HBC. (Maximum of two turns) Water vent screw (Maximum of two turns) Water pump (water vent screw position) Slowly open the strainer inside the HBC (on the maintenance side).

  • Page 398: Instructions For The Air Vent Operation

    [8-14 HBC Maintenance Instructions (Applicable to main and sub HBCs) ] 8-14-3 Instructions for the Air Vent Operation This operation removes the air from the water circuit after water is supplied to it. Perform this operation after completion of the following. Automatic air vent •...
  • Page 399 [8-14 HBC Maintenance Instructions (Applicable to main and sub HBCs) ] 2. Air vent operation [When an outdoor unit is connected, and refrigerant piping work, air-tightness test of refrigerant piping, evacuation of refrigerant circuits, and refrigerant charging have been completed] 1.
  • Page 400 [8-14 HBC Maintenance Instructions (Applicable to main and sub HBCs) ] Flowchart for air vent operation (Turn on DIP SW002-3.) The operation is performed to Air 1 Intermittent operation of water pump (20 min) discharge air from the water circuits. [Air1] Supplying water to all indoor units Air 2 Water supply to all indoor units (20 min)

  • Page 401: Preparation For Servicing

    [8-14 HBC Maintenance Instructions (Applicable to main and sub HBCs) ] 8-14-4 Preparation for servicing Before starting service work, remove the service panels and open the control box. See below for the necessary preparation work. «To remove the service panel (upper panel)» Unscrew the two fixing screws on the upper service panel, lift up the panel to unhook it from the hooks, and pull forward to remove it.
  • Page 402 [8-14 HBC Maintenance Instructions (Applicable to main and sub HBCs) ] «To drain water out of the unit» Open the lower service panel. Loosen the nut on the pump that is indicated in the figure below to drain water. (same with Pump 1) *Loosen the nut slowly.
  • Page 403 [8-14 HBC Maintenance Instructions (Applicable to main and sub HBCs) ] «To reconnect the wires» Reconnect the wires by referring to the figures below. Valve block and its surrounding components Fix in place with cable ties. Clamp down. Clamp down. ...
  • Page 404 [8-14 HBC Maintenance Instructions (Applicable to main and sub HBCs) ] Clamp down. Clamp down. Clamp down. Clamp down. Clamp down. Fix in place with cable ties. ...

  • Page 405: 8-15 Main-Hbc Maintenance Instructions

    [8-15 Main-HBC Maintenance Instructions ] 8-15 Main-HBC Maintenance Instructions 8-15-1 Solenoid Valve Coil (SV1) Replacement Procedure (HBC) Operation Operation procedures Illustrations location 1) Remove the eight fixing screws from the Installation location service panel (front lower). 2) Disconnect the corresponding solenoid valve coil connector from the control Solenoid valve coil (SV1) board.

  • Page 406: Lev Coils (Lev1, Lev2, Lev3) Replacement Procedure (Hbc)

    [8-15 Main-HBC Maintenance Instructions ] 8-15-3 LEV Coils (LEV1, LEV2, LEV3) Replacement Procedure (HBC) Operation Operation procedures Illustrations location 1) Remove the eight fixing screws from the Installation location service panel (front lower). 2) Disconnect the corresponding LEV coil connector from the control board. 3) Remove the control box and then re- move the LEV coil wires secured by clamps and cables ties.
  • Page 407 [8-15 Main-HBC Maintenance Instructions ] 8-15-5 Valve Block Replacement Procedure (HBC) Operation Operation procedures Illustrations location 1) Remove both front service panels (up- Installation location Six clips above the valve block (A) per and lower). 2) Drain water out of the unit through the pump.
  • Page 408 [8-15 Main-HBC Maintenance Instructions ] 8-15-6 Solenoid Valve and LEV Body Replacement Procedure (HBC) Operation Operation procedures Illustrations location 1) Remove the eight fixing screws from the Installation LEV3 coil location service panel (front lower) and then re- move the service panel (front lower). Service panel 2) Disconnect the corresponding valve coil (front lower)

  • Page 409: Pump Replacement Procedure (Hbc)

    [8-15 Main-HBC Maintenance Instructions ] 8-15-8 Pump Replacement Procedure (HBC) Operation Operation procedures Illustrations location «Note» Installation location Pump 1 (back) Pump 2 needs to be removed to replace Pump 1 (even when Pump 2 needs no re- placement). 1) Remove the service panel (lower panel). 2) Drain water through the pump.
  • Page 410 [8-15 Main-HBC Maintenance Instructions ] Operation Operation procedures Illustrations location 8) Pull Pump 2 forward and out, using cau- Installation location tion not to let it come in contact with the base sheet metal, and replace it with a new one. «When replacing Pump 1»...

  • Page 411: Disassembling The Pump And Replacing The Mechanical Seal (Hbc)

    [8-15 Main-HBC Maintenance Instructions ] 8-15-9 Disassembling the Pump and Replacing the Mechanical Seal (HBC) 1. Breakdown diagram of the pump 31 19 12b 12a 1. Water inlet body 12b. Port ring 24. Spring washer 2. Plug assembly 14. Long spacer sleeve 25.
  • Page 412 [8-15 Main-HBC Maintenance Instructions ] (3) Disassembly tool Name Specifications Photo Inner hexagonal wrench Wrench Inner hexagonal sleeve Fixed piece Included in the service kit (4) Removal procedure Operation procedures Illustrations 1) Unscrew the plug assembly (part 2) from the water drain valve and the air-discharge valve using wrench S14.
  • Page 413 [8-15 Main-HBC Maintenance Instructions ] Operation procedures Illustrations 2) Use wrench S14 to loosen the hexagonal nut (part 25) and remove it and the spring washer (part 24). Spring washer Hexagonal nut 3) Remove the water inlet body (part 1). Water inlet 4) Remove four pull rods (part 11).
  • Page 414 [8-15 Main-HBC Maintenance Instructions ] Operation procedures Illustrations 6) Use the fixing piece to extend into the center of the motor (part 32) wind shield to clamp the slot at the end of the motor shaft, while using the Inner hexagonal sleeve S13 to unscrew the nylon lock nut (part 20).
  • Page 415 [8-15 Main-HBC Maintenance Instructions ] Operation procedures Illustrations 8) Remove the sealing gasket (part 17), guide vane (part 12), long spac- er sleeve of impeller (part 14), and impeller (part 4). Sealing gasket Guide vane Long spacer sleeve Impeller - chapter 8 BS_08_L...
  • Page 416 [8-15 Main-HBC Maintenance Instructions ] Operation procedures Illustrations 9) Remove the sealing sleeve (part 15) and sealing gasket (part 17). Sealing sleeve Sealing gasket Part number that appear in the disassembly procedure correspond to the numbers in the pump breakdown drawing. Please keep the motor and parts completely dry during installation to prevent the contami- nated media from entering the motor shell or rotor.
  • Page 417 [8-15 Main-HBC Maintenance Instructions ] Operation procedures Illustrations 2) Remove the spring seat, spring, and rotation ring of the mechanical seal (part 8). Mechanical seal spring seat Mechanical seal spring Mechanical seal rotation ring 3) Remove the water outlet body (part 7) and remove the static ring of the mechanical seal (part 8) Have a new mechanical seal ready.
  • Page 418 [8-15 Main-HBC Maintenance Instructions ] 5. Pump assembly steps (1) Before assembly Clean and check all parts. Replace all damaged parts. Please keep the motor and parts completely dry during installation to prevent the contami- nated media from entering the motor shell or rotor. (2) Assembly tool Name Specifications...
  • Page 419 [8-15 Main-HBC Maintenance Instructions ] Name Specifications Photo Torque wrench (Range: 11-13 N·m) Brush or sponge <> Don't let the coating area get hairy when using the brush. Appropriate amount of methyl silicone oil (Viscosity: 1000 mm /s, 25°C (Flash point: 300°C or above) (Freezing point: -50°C or below) (3) Assembly sequence Operation procedures...
  • Page 420 [8-15 Main-HBC Maintenance Instructions ] Operation procedures Illustrations 4) Wipe the static ring grinding surface of the mechanical seal (part 8) Sponge pad with a sponge pad inside the mechanical seal (part 8). Discard the sponge pad after use. Mechanical seal static ring Mechanical seal 5) Coat one circle of the mechanical seal matched with the motor shaft...
  • Page 421 [8-15 Main-HBC Maintenance Instructions ] Operation procedures Illustrations 8) Press the spring seat by hand from above to contract the spring and get the touch of the spring seat touching the step part of the shaft, then tighten the inner hexagonal screw of the spring seat with a hex- Hexagonal screw agonal torque wrench S3 in that position.
  • Page 422 [8-15 Main-HBC Maintenance Instructions ] Operation procedures Illustrations 10) Install the impeller (part 4) into the guide vane (part 12), and install the motor (part 32) shaft. Impeller Guide vane <> Align the impeller mounting hole and the guide vane mounting hole, and fit the impeller, using caution not to let the tip of the impeller come in con- tact with the port ring (part 12b).
  • Page 423 [8-15 Main-HBC Maintenance Instructions ] Operation procedures Illustrations 11) Install the long spacer sleeve (part 14), impeller (part 4), Shaft-end Long spacer sleeve sleeve (part 19) and flat washer (part 31) in turn. Impeller Impeller tip Shaft-end sleeve Flat washer 12) Tighten the nylon lock nut (part 20).
  • Page 424 [8-15 Main-HBC Maintenance Instructions ] Operation procedures Illustrations 13) To flatten the motor, insert the fixed piece into the central hole of the motor air hood to lock the horizontal groove at the end of the motor shaft, and use the torque wrench S13 to screw the nylon lock nut (part 20).
  • Page 425 [8-15 Main-HBC Maintenance Instructions ] Operation procedures Illustrations 17) The whole pump is placed horizontally and the plug assembly (part 2) is screwed into the water discharge hole and air discharge hole into Air-vent valve Hexagonal nut the water inlet body (part 1). plug assembly Water-discharge valve plug assembly...
  • Page 426 [8-15 Main-HBC Maintenance Instructions ] Operation procedures Illustrations 22) Check: Turn the nylon lock nut (part 20) of the water inlet with inner hexagonal sleeve S13 counterclockwise seen from the motor impel- ler end to check for free rotation without blockage. 23) Paste the rotation sign on the center of the motor fan cover.
  • Page 427 [8-15 Main-HBC Maintenance Instructions ] 6. Common faults and solution Please cut off the power supply before removal of the motor junction box and dismantlement of the pump. Fault Cause Solution Remarks Power failure Replace the power supply Fuse is broken Replace the fuse When the opera- tion is started, the...

  • Page 428: Joint Replacement Procedure (Hbc)

    [8-15 Main-HBC Maintenance Instructions ] 8-15-10 JOINT Replacement Procedure (HBC) Operation procedures Illustrations 1) Remove the JOINT. JOINT(OUT) JOINT(IN) 2) Remove the O-RING from the JOINT. JOINT The figure at right shows JOINT (IN). The same procedure applies to JOINT (OUT).

  • Page 429: Thermistor (Th31) Replacement Procedure (Hbc)

    [8-15 Main-HBC Maintenance Instructions ] 8-15-11 Thermistor (TH31) Replacement Procedure (HBC) Operation Operation procedures Illustrations location 1) Remove the two fixing screws from the Installation location service panel (front upper) and then re- move the service panel (front upper). Service panel 2) Remove the eight fixing screws from the (front upper) service panel (front lower) and then re-...
  • Page 430 [8-15 Main-HBC Maintenance Instructions ] 8-15-12 Thermistors (TH12, TH14, TH15, and TH34) Replacement Procedure (HBC) Operation Operation procedures Illustrations location 1) Remove the eight fixing screws from the Installation location service panel (front lower) and then re- move the service panel (front lower). Control box Disconnect all wires from the circuit board except the power-supply wire,...

  • Page 431: 4-Way Valve Body (21S4) Replacement Procedure (Hbc)

    [8-15 Main-HBC Maintenance Instructions ] 8-15-13 4-way Valve Body (21S4) Replacement Procedure (HBC) Operation Operation procedures Illustrations location «Note» Installation location Protect the insulation materials in the pe- riphery of the area to be brazed. Replace the entire four-way valve assembly when only the four-way valve on one side needs replacement.
  • Page 432 [8-15 Main-HBC Maintenance Instructions ] Operation Operation procedures Illustrations location 8) Cut the pipes and remove the braze Installation location where indicated to remove the four-way Remove the braze. valve ASSY from the unit. 9) Pull the four-way valve ASSY out. Cut the pipes.

  • Page 433: Plate Heat Exchanger Replacement Procedure (Hbc)

    [8-15 Main-HBC Maintenance Instructions ] 8-15-14 Plate Heat Exchanger Replacement Procedure (HBC) Almost all pipes need to be removed from the unit to replace the plate heat exchanger. Because high skills are required to replace the plate heat exchanger, the standard procedure is to replace the entire unit. (Replacement of the plate heat exchanger will take about two days.) Operation Operation procedures...
  • Page 434 [8-15 Main-HBC Maintenance Instructions ] Operation Operation procedures Illustrations location 7) Remove the spacers and the sheet met- Installation location Areas to remove al near LEV1 and LEV2. the braze from (x6) Remove the braze from the areas where indicated in the figure at right, and pull out the SV1 and LEV ASSY.
  • Page 435 [8-15 Main-HBC Maintenance Instructions ] Operation Operation procedures Illustrations location 14) Remove the pipe with a protective valve Installation Unclip the pipe location Remove the parts from the fixing plate. located behind the holding the pipe. Unclip the pipe located behind the Cool- plate heat exchanger.
  • Page 436 [8-15 Main-HBC Maintenance Instructions ] Operation Operation procedures Illustrations location 19) Remove the nut by holding a spanner Installation location between the back of the plate heat ex- changer and the side panel. (One nut in the front) 20) Unscrew the screws on the plate heat exchanger fixing plate.
  • Page 437 [8-15 Main-HBC Maintenance Instructions ] Operation Operation procedures Illustrations location 24) Remove the insulation material shown Installation location Remove in the figure at right. Remove the braze from the double-tube pipe, the pipe with Remove the pipe cover. a pressure sensor, and the refrigerant circuit pipe of the plate heat exchanger.
  • Page 438 [8-15 Main-HBC Maintenance Instructions ] Operation Operation procedures Illustrations location 31) Remove the nut by holding a spanner Installation location between the back of the plate heat ex- changer and the side panel. (One nut in the front) Remove the nut (x1). 32) Unscrew the screws from the plate heat exchanger fixing plate.
  • Page 439 [8-15 Main-HBC Maintenance Instructions ] Operation Operation procedures Illustrations location 36) Rotate the plate heat exchanger toward Installation location the back, and then pull it forward and out of the unit. 37) Braze the new plate heat exchanger to the unit in the reverse order as it was re- moved.
  • Page 440 [8-15 Main-HBC Maintenance Instructions ] Operation Operation procedures Illustrations location 5. The elbow that was removed and the Installation location pipe that was cut in step 17 Cut the pipe here. See the figure at right for the installa- tion angle of the elbow. The swing angle against the T-joint on the plate heat exchanger: 0°...

  • Page 441: Pressure Sensor Replacement Procedure (Hbc)

    [8-15 Main-HBC Maintenance Instructions ] 8-15-15 Pressure Sensor Replacement Procedure (HBC) Operation Operation procedures Illustrations location 1) Collect the refrigerant. Installation location 2) Remove the service panel (front lower). 3) Disconnect all connectors except the connectors of the on-site wiring, and open the control box.

  • Page 442: Water Pressure Sensor (Pw1, 2, 4) Replacement Procedure (Hbc)

    [8-15 Main-HBC Maintenance Instructions ] 8-15-17 Water Pressure Sensor (PW1, 2, 4) Replacement Procedure (HBC) Operation Operation procedures Illustrations location 1) Remove the service panel (front lower). Installation location 2) Drain water through the pump. 3) Disconnect the connectors of the pres- sure sensor to be replaced, and release the wires from the clamps and the cable ties.

  • Page 443: Refrigerator Circuit Side Strainer Replacement Procedure (Hbc)

    [8-15 Main-HBC Maintenance Instructions ] 8-15-19 Refrigerator Circuit Side Strainer Replacement Procedure (HBC) Operation Operation procedures Illustrations location 1) Collect the refrigerant. Installation Strainer location 2) Remove the service panel (front lower). 3) Remove the pipe covers from the sur- rounding components to avoid heat damage.

  • Page 444: 8-16 Sub-Hbc Maintenance Instructions

    [8-16 Sub-HBC Maintenance Instructions ] 8-16 Sub-HBC Maintenance Instructions 8-16-1 Valve Block Assembly Replacement Procedur (Sub HBC) Operation Operation procedures Illustrations location 1) Drain water from the system, and move Under the ceiling the unit out of the ceiling space. 2) Unscrew all screws from the service Service panel (top left) panels (top, front, back, left), and re-...
  • Page 445 [8-16 Sub-HBC Maintenance Instructions ] Operation Operation procedures Illustrations location 6) Unscrew the fixing screws (x3) on each Under the Hanging brackets ceiling hanging bracket (x4), and remove the hanging brackets. 7) Unscrew the fixing screws each (x4) on the right and left panels, and remove the right and left panels.

  • Page 446: Thermistor (Th31) Replacement Procedur (Sub Hbc)

    [8-16 Sub-HBC Maintenance Instructions ] 8-16-2 Thermistor (TH31) Replacement Procedur (Sub HBC) Operation Operation procedures Illustrations location 1) Unscrew the fixing screws (x4) on the Above the Service panel (top left) ceiling service panel (right), and remove the service panel (right). 2) Unscrew the fixing screws (x2) on the service panel (top left), and remove the service panel (top left).

  • Page 447: Thermistor (Th32, Th33) Replacement Procedur (Sub Hbc)

    [8-16 Sub-HBC Maintenance Instructions ] 8-16-3 Thermistor (TH32, TH33) Replacement Procedur (Sub HBC) Operation Operation procedures Illustrations location 1) Unscrew the fixing screws (x4) on the Above the Service panel (top right) Service panel (top left) ceiling service panel (right), and remove the service panel (right).

  • Page 448: Air Vent Valve Replacement Procedure (Sub Hbc)

    [8-16 Sub-HBC Maintenance Instructions ] 8-16-4 Air Vent Valve Replacement Procedure (Sub HBC) Operation Operation procedures Illustrations location 1) Unscrew the fixing screws (x4) on the Above the Air vent valve ceiling service panel (right), and remove the service panel (right). 2) Cut the cable tie that is holding the PVC tube.

  • Page 449: Troubleshooting Problems Using The Led Status Indicators On The Outdoor Unit

    [8-17 Troubleshooting Problems Using the LED Status Indicators on the Outdoor Unit ] 8-17 Troubleshooting Problems Using the LED Status Indicators on the Outdoor Unit If the LED error display appear as follows while all the SW4 switches and SW6-10 are set to OFF, check the items under the ap- plicable item numbers below.

  • Page 450: Chapter 9 Usb Function

    Chapter 9 USB Function Service Overview ..........................1 9-1-1 Function Overview ..........................1 9-1-2 System Structure ............................ 2 9-1-3 Necessary Materials ..........................3 Operation Data Collection and Storage Functions (Outdoor unit)........... 4 9-2-1 Preparation ............................. 4 9-2-2 Storing Data on a USB Memory Stick..................... 4 9-2-3 Collecting Operation Data........................
  • Page 451 GB_BS_09_F...

  • Page 452: Service Overview

    [9-1 Service Overview ] Service Overview 9 USB Function 9-1-1 Function Overview The control board has a USB port that allows the use of the following two functions. 1. Collection and storage of operation data (Outdoor unit) Operation information from indoor units, outdoor units, and other equipment and devices in the system are collected andstored in the flash memory in the control board of the outdoor unit (OC).

  • Page 453: System Structure

    [9-1 Service Overview ] 9-1-2 System Structure (1) Control board on the outdoor unit CN601 SWP3 Push switch (Function setting) Dip switch SW7-9 SW6-10 LED301 Maintenance LED CNUSB USB memory connector - chapter 9 BS_09_F...

  • Page 454: Necessary Materials

    [9-1 Service Overview ] (2) Control board on the HBC CN703 SWP1 Push switch LD001 (Function setting) Service LED SWP3 Push switch (Function setting) SW002-9 9-1-3 Necessary Materials The use of the USB function requires a USB memory stick and a portable battery charger. See below for the types of USB memory stick and portable charger that can be used.

  • Page 455: Operation Data Collection And Storage Functions (Outdoor Unit)

    [9-2 Operation Data Collection and Storage Functions (Outdoor unit) ] Operation Data Collection and Storage Functions (Outdoor unit) Operation data of the units collected on the outdoor unit can be recorded in the flash memory of the control board. These data can also be exported to and recorded in a USB memory stick.
  • Page 456 [9-2 Operation Data Collection and Storage Functions (Outdoor unit) ] When done storing data, disconnect the portable battery charger from the control board. Then disconnect the USB memory stick from the control board. Turn the main power to the outdoor unit (OC) back on. If the data collection process needs to be started, check the operation data collection status by following the procedures ex- plained in [9-2-3 Collecting Operation Data] and making the necessary settings.

  • Page 457: Collecting Operation Data

    [9-2 Operation Data Collection and Storage Functions (Outdoor unit) ] 9-2-3 Collecting Operation Data This function is used to collect the operation data of the outdoor and indoor units via M-NET, and record the data in the flash memory on the control board. When the memory is full, it is overwritten from the first segment. The settings for checking the status of operation data collection, for starting/ending data collection, and for continuing/stop- ping error-data collection are made, using the switches on the control board.

  • Page 458: Precautions

    [9-2 Operation Data Collection and Storage Functions (Outdoor unit) ] 9-2-4 Precautions For dealing with display on the maintenance LED and other problems, refer to Section [9-4 Maintenance LED Display and Troubleshooting]. 1. Storage of data in a USB memory stick Take extra care regarding electric shock during the work on the control board, such as the insertion of the USB memory stick.

  • Page 459: Software Rewrite Function On The Usb (Outdoor Unit, Hbc)

    [9-3 Software Rewrite Function on the USB (Outdoor unit, HBC) ] Software Rewrite Function on the USB (Outdoor unit, HBC) The USB memory stick may be used to rewrite the software of the outdoor unit and the HBC in the same way as using a ROM writer.

  • Page 460: Precautions

    [9-3 Software Rewrite Function on the USB (Outdoor unit, HBC) ] (3) Confirmation of operation [Outdoor unit] 1) Disconnect the portable battery charger from CN601 on the control board of the outdoor unit. The control board of the outdoor unit will be turned off. 2) Remove the USB memory stick from the USB port (CNUSB) on the control board of the outdoor unit.

  • Page 461: Maintenance Led Display And Troubleshooting

    [9-4 Maintenance LED Display and Troubleshooting ] Maintenance LED Display and Troubleshooting 9-4-1 Maintenance LED Display Content List The following table shows the maintenance LED displays for each function. When dealing with the errors shown on the display, refer to Section [9-4-2 Troubleshooting] 1.
  • Page 462 [9-4 Maintenance LED Display and Troubleshooting ] 2. Collecting operation data (Outdoor unit) Switch Meaning Maintenance LED Display Description “ON” OC is collecting operation da- ta. A blinking display indicates that data collection is temporarily sus- Collection in progress pended. No switch setting is neces- sary.
  • Page 463 [9-4 Maintenance LED Display and Troubleshooting ] 3. Rewriting software (Outdoor unit, HBC) Switch Meaning Maintenance LED Display Description “PRO” Software rewrite mode is ac- tive. Software rewrite is enabled. See Section [9-4-2 Troubleshoot- Rewrite Mode activated ing]3-(1), 3-(2) and 3- (3). Software rewrite is in progress.

  • Page 464: Troubleshooting

    [9-4 Maintenance LED Display and Troubleshooting ] 9-4-2 Troubleshooting Troubleshooting of USB functions are shown below. The displays on the maintenance LED described in Section [9-4-1 Maintenance LED Display Content List]may also be used as a reference. 1. Storing on a USB memory stick (outdoor unit) (1) Maintenance LED does not display "USB."...
  • Page 465 [9-4 Maintenance LED Display and Troubleshooting ] (5) Maintenance LED displays "Er10." (Meaning or Cause) Because there was a problem regarding the control board during data storage, data storage is unfinished. (Solution) Perform data storage again. Remove the USB memory stick from the control board and insert it again. Then conduct data storage using Section [9-2-2 Storing Data on a USB Memory Stick]as a reference.
  • Page 466 [9-4 Maintenance LED Display and Troubleshooting ] 3. Rewriting software (outdoor unit/HBC) (1) Maintenance LED does not display "Pro." (Meaning or Cause) The system is not started in Software Rewrite Mode. Switches (outdoor unit: SW7-9; HBC: SW002-9) on the control board may not be in the ON position, or the portable charger may not be charged sufficiently.
  • Page 467 [9-4 Maintenance LED Display and Troubleshooting ] (5) Maintenance LED displays "Er02." (Meaning or Cause) Software rewrite is suspended due to a problem with the USB memory stick during the software rewrite process. For example, if the USB memory stick is disconnected during data storage, this display appears on the maintenance LED. (Solution) Check the connection of the USB memory stick.

  • Page 468: Chapter 10 Led Status Indicators

    Chapter 10 LED Status Indicators 10-1 LED Status Indicators (Outdoor unit) ....................1 10-1-1 How to Read the LED ..........................1 10-1-2 Initial LED Display........................... 2 10-1-3 Clock Memory Function .......................... 3 10-2 LED Status Indicators (HBC) ....................... 4 10-2-1 How to Read the LED ..........................4 10-2-2 Initial LED Display (HBC)........................
  • Page 469 GB_BS_10_M...

  • Page 470: Led Status Indicators (Outdoor Unit)

    [10-1 LED Status Indicators (Outdoor unit) ] 10-1 LED Status Indicators (Outdoor unit) 10 LED Status Indicators 10-1-1 How to Read the LED By setting the DIP SW 4-1 through 4-10 (Set SW6-10 to OFF.)(Switch number 10 is represented by 0), the operating condition of the unit can be monitored on the service monitor.
  • Page 471 [10-1 LED Status Indicators (Outdoor unit) ] 10-1-2 Initial LED Display From power on until the completion of initial settings, the following information will be displayed on the monitor screen. (Displays No. 1 through No. 4 in order repeatedly.) Item Display Remarks Software version...
  • Page 472 [10-1 LED Status Indicators (Outdoor unit) ] 10-1-3 Clock Memory Function The outdoor unit has a simple clock function that enables the unit to calculate the current time with an internal timer by receiv- ing the time set by the system controller, such as AG-150A. If an error (including a preliminary error) occurs, the error history data and the error detection time are stored into the service memory.

  • Page 473: Led Status Indicators (Hbc)

    [10-2 LED Status Indicators (HBC) ] 10-2 LED Status Indicators (HBC) 10-2-1 How to Read the LED The operation status of the unit can be monitored on the service monitor. The service monitor uses 4-digit 7-segment LED to display flags. There are no check items using dipswitch settings.
  • Page 474 [10-2 LED Status Indicators (HBC) ] 10-2-2 Initial LED Display (HBC) From power on until the completion of initial settings, the following information will be displayed on the monitor screen. (Displays No. 1 through No. 4 in order repeatedly.) Item Display Remarks Software version...
  • Page 475 [10 - 3 LED Status Indicators Table] - chapter 10 BS_10_M...
  • Page 476 [10 - 3 LED Status Indicators Table] BS_10_M chapter 10 -...
  • Page 477 [10 - 3 LED Status Indicators Table] - chapter 10 BS_10_M...
  • Page 478 [10 - 3 LED Status Indicators Table] BS_10_M chapter 10 -...
  • Page 479 [10 - 3 LED Status Indicators Table] - chapter 10 BS_10_M...
  • Page 480 [10 - 3 LED Status Indicators Table] BS_10_M chapter 10 -...
  • Page 481 [10 - 3 LED Status Indicators Table] - chapter 10 BS_10_M...
  • Page 482 [10 - 3 LED Status Indicators Table] BS_10_M chapter 10 -...
  • Page 483 [10 - 3 LED Status Indicators Table] - chapter 10 BS_10_M...
  • Page 484 [10 - 3 LED Status Indicators Table] BS_10_M chapter 10 -...
  • Page 485 [10 - 3 LED Status Indicators Table] - chapter 10 BS_10_M...
  • Page 486 [10 - 3 LED Status Indicators Table] BS_10_M chapter 10 -...
  • Page 487 [10 - 3 LED Status Indicators Table] - chapter 10 BS_10_M...
  • Page 488 [10 - 3 LED Status Indicators Table] BS_10_M chapter 10 -...
  • Page 489 [10 - 3 LED Status Indicators Table] - chapter 10 BS_10_M...
  • Page 490 [10 - 3 LED Status Indicators Table] BS_10_M chapter 10 -...
  • Page 491 [10 - 3 LED Status Indicators Table] - chapter 10 BS_10_M...
  • Page 492 [10 - 3 LED Status Indicators Table] BS_10_M chapter 10 -...
  • Page 493 [10 - 3 LED Status Indicators Table] - chapter 10 BS_10_M...
  • Page 494 [10 - 3 LED Status Indicators Table] BS_10_M chapter 10 -...
  • Page 495 [10 - 3 LED Status Indicators Table] - chapter 10 BS_10_M...
  • Page 496 [10 - 3 LED Status Indicators Table] BS_10_M chapter 10 -...
  • Page 497 [10 - 3 LED Status Indicators Table] - chapter 10 BS_10_M...
  • Page 498 [10 - 3 LED Status Indicators Table] BS_10_M chapter 10 -...
  • Page 499 [10 - 3 LED Status Indicators Table] - chapter 10 BS_10_M...
  • Page 500 [10 - 3 LED Status Indicators Table] BS_10_M chapter 10 -...
  • Page 501 [10 - 3 LED Status Indicators Table] - chapter 10 BS_10_M...
  • Page 503 Related Links Model Number: CMB-WM350F-AA CMB-WM-F(V)-AA(B)_InstallationManual_WT09805X01 CMB-WM-F-AA_PartsList_BWE021510 CMB-WM-F-AA_ServiceHandbook_HWE21050 HVRF_Information_Pack_Ver1.0_ Vertical & Horizontal HBC Databook (MEES21K003) Vertical HBC Controller (HVRF) Product Information Sheet...

This manual is also suitable for:

Pury-m250ynw-a1Pury-m300ynw-a1Pury-m350ynw-a1Pury-m400ynw-a1Pury-m450ynw-a1Pury-m500ynw-a1 ... Show all