Mitsubishi Electric PUHY-200YMF-C Service Handbook
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Mitsubishi Electric PUHY-200YMF-C Service Handbook

Mitsubishi Electric PUHY-200YMF-C Service Handbook

Air conditioners city multi
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AIR CONDITIONERS CITY MULTI
PUHY-200YMF-C, 250YMF-C
Models
PUHY-P200YMF-C, P250YMF-C
PUY-200YMF-C, 250YMF-C
PUY-P200YMF-C, P250YMF-C
PURY-200YMF-C, 250YMF-C
PURY-P200YMF-C, P250YMF-C
CMB-P104, P105, P106, P108, P1010, P1013, P1016V-E
Service Handbook
Table of Contents
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Summary of Contents for Mitsubishi Electric PUHY-200YMF-C

  • Page 1 AIR CONDITIONERS CITY MULTI PUHY-200YMF-C, 250YMF-C Models PUHY-P200YMF-C, P250YMF-C PUY-200YMF-C, 250YMF-C PUY-P200YMF-C, P250YMF-C PURY-200YMF-C, 250YMF-C PURY-P200YMF-C, P250YMF-C CMB-P104, P105, P106, P108, P1010, P1013, P1016V-E Service Handbook...

  • Page 2: Table Of Contents

    Contents PRECAUTIONS FOR DEVICES THAT USE R407C REFRIGERANT ..[1] Storage of Piping Material ..............4 [2] Piping Machining ................5 [3] Necessary Apparatus and Materials and Notes on Their Handling .. 6 [4] Brazing ....................7 [5] Airtightness Test ................8 [6] Vacuuming ..................

  • Page 3: Safety Precautions

    • Do not reconstruct or change the settings of the protection devices. - If the pressure switch, thermal switch, or other protection device is shorted and operated forcibly, or parts other than those specified by Mitsubishi Electric are used, fire or explosion may result. –2–...

  • Page 4: Precautions For Devices That Use R407C Refrigerant

    1 1 1 1 1 PRECAUTIONS FOR DEVICES THAT USE R407C REFRIGERANT Caution Do not use the existing refrigerant piping. Use a vacuum pump with a reverse flow check valve. • The vacuum pump oil may flow back into the refriger- •...

  • Page 5: Storage Of Piping Material

    [1] Storage of Piping Material (1) Storage location Store the pipes to be used indoors. (Warehouse at site or owner’s warehouse) Storing them outdoors may cause dirt, waste, or water to infiltrate. (2) Pipe sealing before storage Both ends of the pipes should be sealed until immediately before brazing. Wrap elbows and T’s in plastic bags for storage.

  • Page 6: Piping Machining

    [2] Piping Machining Use ester oil, ether oil or alkylbenzene (small amount) as the refrigerator oil to coat flares and flange connections. Use only the necessary minimum quantity of oil ! Reason : 1. The refrigerator oil used for the equipment is highly hygroscopic and may introduce water inside. Notes : •...

  • Page 7: Necessary Apparatus And Materials And Notes On Their Handling

    [3] Necessary Apparatus and Materials and Notes on Their Handling The following tools should be marked as dedicated tools for R407C. <> Apparatus Used R407C Gauge manifold Evacuating, refrigerant filling Current product Charging hose Operation check...

  • Page 8: Brazing

    [4] Brazing No changes from the conventional method, but special care is required so that foreign matter (ie. oxide scale, water, dirt, etc.) does not enter the refrigerant circuit. Example : Inner state of brazed section When non-oxide brazing was not used When non-oxide brazing was used Items to be strictly observed : 1.

  • Page 9: Airtightness Test

    [5] Airtightness Test No changes from the conventional method. Note that a refrigerant leakage detector for R22 cannot detect R407C leakage. Halide torch R22 leakage detector Items to be strictly observed : 1. Pressurize the equipment with nitrogen up to the design pressure and then judge the equipment’s airtightness, taking temperature variations into account.

  • Page 10: Charging Of Refrigerant

    [7] Charging of Refrigerant R407C must be in a liquid state when charging, because it is a non-azeotropic refrigerant. For a cylinder with a syphon attached For a cylinder without a syphon attached Cylin- Cylin- Cylinder color identification R407C-Gray Charged with liquid refrigerant R410A-Pink Valve Valve...

  • Page 11: Component Of Equipment

    2 2 2 2 2 COMPONENT OF EQUIPMENT [1] Appearance of Components Outdoor unit • PU(H)Y-(P)200, 250YMF-C Propeller fan Fan motor Heatexchanger(rear) Heatexchanger(front) Control Box Compressor PUHY-YMF-C PUY-P-YMF-C Accumulator 4–way valve Accumulator Drier Compressor Compressor –10–...
  • Page 12 • PURY-P200·250YMF-C Propeller fan Fan motor Heat exchanger(rear) Heat exchanger(front) Control box Compressor PURY-YMF-C PURY-P-YMF-C 4–way valve Accumulator SV block CS circuit Accumulator SV block 4–way valve CV block Drier CV block Compressor Compressor –11–...
  • Page 13 Controller Box FANCON board INV board MAIN board Noise filter Choke coil (L2) Terminal block TB1A Power Source Terminal block TB7 Transmission (Centralized control) Terminal block TB3 Transmission Inteligent Power Module (IPM) G/A board Capacitor (C2, C3) (Smoothing capacitor) Diode stack (DS) Magnetic contactor (52C) –12–...
  • Page 14 MAIN board • PUHY / PURY CNVCC4 Power source CNTR CNFC1 CNS1 CNS2 CN40 CN41 CNVCC3 for control(5V) Power Source for control 1-2 30V 1-3 30V 4-6 12V 5-6 5V CN51 Indication distance 3-4 Compressor ON/OFF 3-5 Trouble CNRS3 Serial transmission to INV board CN3D CN3S...
  • Page 15 INV board CNVDC DC-560V CN15V2 Power supply for IPM control CNVCC4 Power supply (5V) CNL2 Choke coil CNVCC2 Power supply 1-2 30V, 1-3 30V CN52C 4-6 12V, 5-6 5V Control for CNDR2 Out put to G/A board CNFAN Control CNTH for MF1 CNAC2 Power...
  • Page 16 FANCON board CNPOW CNFAN CNFC2 G/A board CNDC1 CN15V1 CNIPM1 CNDR1 –15–...
  • Page 17 BC controller CNTR CN12 CN02 Power M-NET supply transmission 1 EARTH CN03 –16–...
  • Page 18 RELAY 10 board RELAY 4 board –17–...

  • Page 19: Refrigerant Circuit Diagram And Thermal Sensor

    [2] Refrigerant Circuit Diagram and Thermal Sensor : Solenoid valve 1PUHY-200YMF-C, 250YMF-C : Orifice : Capillary : Check valve : Thermal sensor : Strainer : Service port : Accumulator –18–...
  • Page 20 2PUY-200YMF-C, 250YMF-C : Solenoid valve : Orifice : Capillary : Check valve : Thermal sensor : Strainer : Service port : Accumulator – 1 9 –...
  • Page 21 3PUHY-P200YMF-C, P250YMF-C : Solenoid valve : Orifice : Capillary : Check valve : Thermal sensor : Strainer : Service port : Accumulator – 2 0 –...
  • Page 22 4PUY-P200YMF-C, 250YMF-C : Solenoid valve : Orifice : Capillary : Check valve : Thermal sensor : Strainer : Service port : Accumulator –21–...
  • Page 23 5PURY-200YMF-C, 250YMF-C : Solenoid valve : Orifice : Capillary : Check valve : Thermal sensor : Strainer : Service port : Accumulator Solenoid Valves Block Distributor 63HS HEXb SV1 SV2 HEXf3 63LS HEXf2 Comp HEXf1 TH10 TH10 SLEV CV10 Check Valves Block Gas/liquid separator TH23 TH12...
  • Page 24 6PURY-P200YMF-C, P250YMF-C : Solenoid valve : Orifice : Capillary : Check valve : Thermal sensor : Strainer : Service port : Accumulator Solenoid Valves Block Distributor 63HS HEXb HEXf3 SV1 SV2 63LS HEXf2 Comp HEXf1 TH10 SLEV CV10 Drier CS(Composition Sensing) circuit Check Valves Block Gas/liquid separator TH23...

  • Page 25: Electrical Wiring Diagram

    [3] Electrical Wiring Diagram 1 PU(H)Y-(P)200·250YMF-C –24–...
  • Page 26 2 PURY-(P)200·250YMF-C – 2 5 –...
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  • Page 34: Standard Operation Data

    [4] Standard Operation Data (1) Cooling operation 1 PU(H)Y-200·250YMF-C Outdoor unit PUHY-200YMF-C PUHY-250YMF-C Items PUY-200YMF-C PUY-250YMF-C Indoor 27.0/19.0 27.0/19.0 Ambient temp. DB/WB Outdoor 35.0/24.0 35.0/24.0 Quantity Quantity in operation Indoor unit – Model Main pipe Branch pipe Piping Total piping length –...
  • Page 35 PU(H)Y-P200·250YMF-C Outdoor unit PUHY-P200YMF-C PUHY-P250YMF-C Items PUY-P200YMF-C PUY-P250YMF-C Indoor 27.0/19.0 27.0/19.0 Ambient temp. DB/WB Outdoor 35.0/24.0 35.0/24.0 Quantity Indoor unit Quantity in operation – Model Main pipe Piping Branch pipe Total piping length – Indoor unit fan notch Refrigerant volume 11.7 13.2 14.5...
  • Page 36 PURY-200·250YMF-C Outdoor unit PURY-P200YMF-C PURY-P250YMF-C Items Indoor 27.0/19.0 27.0/19.0 Ambient temp. DB/WB Outdoor 35.0/24.0 35.0/24.0 Quantity Q’ty Indoor unit Quantity in operation Model – Main pipe Piping Branch pipe Total piping length Indoor unit fan notch – Refrigerant volume 13.9 14.4 Compressor volts / Frequency 270/75...
  • Page 37 PURY-P200·250YMF-C Outdoor unit PURY-P200YMF-C PURY-P250YMF-C Items Indoor 27.0/19.0 27.0/19.0 Ambient temp. DB/WB Outdoor 35.0/24.0 35.0/24.0 Quantity Q’ty Indoor unit Quantity in operation Model – Main pipe Piping Branch pipe Total piping length Indoor unit fan notch – Refrigerant volume 14.4 14.9 Compressor volts / Frequency V/Hz...
  • Page 38 2 Heating operation PUHY-200·250YMF-C Outdoor unit PUHY-200YMF-C PUHY-250YMF-C Items Indoor 20.0/– 20.0/– Ambient temp. DB/WB Outdoor 7.0/6.0 7.0/6.0 Quantity Indoor unit Quantity in operation – Model Main pipe Piping Branch pipe Total piping length – Indoor unit fan notch Refrigerant volume 11.2...
  • Page 39 PUHY-P200·250YMF-C Outdoor unit PUHY-P200YMF-C PUHY-P250YMF-C Items Indoor 20.0/– 20.0/– Ambient temp. DB/WB Outdoor 7.0/6.0 7.0/6.0 Quantity Indoor unit Quantity in operation – Model Main pipe Piping Branch pipe Total piping length – Indoor unit fan notch Refrigerant volume 11.7 13.2 13.4 12.3 17.1...
  • Page 40 PURY-200·250YMF-C Outdoor unit PURY-200YMF-C PURY-250YMF-C Items Indoor 20.0/– 20.0/– Ambient temp. DB/WB Outdoor 7.0/6.0 7.0/6.0 Quantity Q’ty Quantity in operation Indoor unit Model – Main pipe Branch pipe Piping Total piping length Indoor unit fan notch – Refrigerant volume 13.9 14.4 Compressor volts / Frequency V/Hz...
  • Page 41 PURY-P200·250YMF-C Outdoor unit PURY-P200YMF-C PURY-P250YMF-C Items Indoor 20.0/– 20.0/– Ambient temp. DB/WB Outdoor 7.0/6.0 7.0/6.0 Quantity Q’ty Quantity in operation Indoor unit Model – Main pipe Piping Branch pipe Total piping length Indoor unit fan notch – Refrigerant volume 14.4 14.9 Compressor volts/Frequency V/Hz...

  • Page 42: Function Of Dip Sw And Rotary Sw

    [5] Function of Dip SW and Rotary SW (1) Outdoor unit 1 PU(H)Y-200·250YMF-C Function according to switch operation Switch set timing Switch Function When off When on When off When on Unit address setting Set on 51~100 with the dial switch. Before power is turned on.
  • Page 43 2 PUHY-P200·250YMF-C Function according to switch operation Switch set timing Switch Function When off When on When off When on Unit address setting Set on 51~100 with the dial switch. Before power is turned on. For self diagnosis/ LED Monitering Display During normal operation when power operation monitoring is on.
  • Page 44 3 PURY-200·250YMF-C Function according to switch operation Switch set timing Switch Function When off When on When off When on Unit address setting Set on 51~100 with the dial switch. Before power is turned on. For self diagnosis/ LED monitering display During normal operation when power operation monitoring is on.
  • Page 45 4 PURY-P200·250YMF-C Function according to switch operation Switch set timing Switch Function When off When on When off When on Unit address setting Set on 51~100 with the dial switch. Before power is turned on. For self diagnosis/ LED monitering display During normal operation when power operation monitoring is on.
  • Page 46 (2) Indoor unit DIP SW1, 3 Operation by SW Switch set timing Remarks Switch SW name Room temp. sensor position Indoor unit inlet Built in remote controller Clogged filter detect. None Provided Filter duration 100h 2500h Always ineffective for PKFY-P.VAM OA intake Ineffective Effective...
  • Page 47 Setting of DIP SW4 Setting of DIP SW5 Model Circuit board used 220V 240V PMFY-P-VBM-A PLFY-P-VLMD-A – – – – PDFY-P20 ~ 80VM-A PLFY-P40 ~ 63VKM-A PLFY-P80 ~ 125VKM-A Phase control PCFY-P-VGM-A PKFY-P-VGM-A PKFY-P-VAM-A – – – – PEFY-P20 ~ 80VMM-A PFFY-P-VLEM-A, P-VLRM-A –...

  • Page 48: Test Run

    3 3 3 3 3 TEST RUN [1] Before Test Run (1) Check points before test run Neither refrigerant leak nor loose power source/ transmission lines should be found. Confirm that the resistance between the power source terminal block and the ground exceeds 2MΩ by measur- ing it with a DC500V megger.
  • Page 49 (3) Check points for test run when mounting options Result Built-in optional parts Content of test run Check point Mounting of drain Release connector of pump circuit, Local remote controller displays code water lifting-up check error detection by pouring No. “2503”, and the mechanism stops. mechanism water into drain pan water inlet.
  • Page 50 (5) Check points for system structure ex. PURY-200YMF-C Check points from installation work to test run. Classification Portion Check item Trouble Installation and Instruction for selecting combination of outdoor unit, piping and indoor unit followed? (Maximum number of indoor Not operate. units which can be connected, connecting model name, and total capacity.) Follow limitation of refrigerant piping length? For ex-...
  • Page 51 CENTRALLY CONTROLLED 1Hr. 1Hr. CENTRALLY CONTROLLED ˚C ˚C D A I L Y ON OFF D A I L Y ON OFF AUTO OFF CLOCK CLOCK AUTO OFF FILTER FILTER CHECK REMAINDER CHECK REMAINDER CHECK MODE CHECK MODE TEST RUN TEST RUN ˚C STAND BY...

  • Page 52: Test Run Method

    [2] Test Run Method Operation procedure Turn on universal power supply at least 12 hours before getting started → Displaying “HO” on display panel for about two minutes Press TEST RUN button twice → Displaying “TEST RUN’’ on display panel selection button →...
  • Page 53 4 GROUPING REGISTRATION OF INDOOR UNITS WITH M-NET REMOTE CONTROLLER (1) Switch function • The switch operation to register with the remote controller is shown below: CENTRALLY CONTROLLED ˚C ON OFF D A I L Y AUTO OFF CLOCK FILTER CHECK REMAINDER CHECK MODE...
  • Page 54 (2) Attribute display of unit • At the group registration and the confirmation/deletion of registration/connection information, the type (attribute) of the unit is displayed with two English characters. Display Type (Attribute) of unit/controller Indoor unit connectable to remote controller Outdoor unit Local remote controller System controller (MJ) [Description of registration/deletion/retrieval]...
  • Page 55 (3) Group registration of indoor unit Registration method • Group registration of indoor unit ................ 1 The indoor unit to be controlled by a remote controller is registered on the remote controller. [Registration procedure] 1 With the remote controller under stopping or at the display of “HO”, continuously press the switch FILTER (A + B) at the same time for 2 seconds to change to the registration mode.
  • Page 56 Method of retrieval/confirmation • Retrieval/confirmation of group registration information on indoor unit ....2 The address of the indoor unit being registered on the remote controller is displayed. [Operation procedure] 1 With the remote controller under stopping or at the display of “HO”, continuously press the switch (A FILTER + B) at the same time for 2 seconds to change to the registration mode.
  • Page 57 • Registered ˚C (Alternative display) ˚C TEMP ON/OFF CLOCK ON OFF FILTER CHECK TEST PAR-F27MEA TIMER SET ˚C 1 + 2 (Alternative display) 2 Press the switch for 1 Set the address confirmation (E) ˚C ˚C INDOOR UNIT ERROR CODE ADDRESS NO OA UNIT ADDRESS NO * Same display will appear when...
  • Page 58 Deletion of information on address not existing • Deletion of information on address not existing ........... 5 This operation is to be conducted when “6607” error (No ACK error) is displayed on the remote controller caused by the miss setting at test run, or due to the old memory remained at the alteration/modification of group composition, and the address not existing will be deleted.

  • Page 59: Control

    5 5 5 5 5 CONTROL [1] Control of Outdoor Unit (1) Initial processing • When turning on power source, initial processing of microcomputer is given top priority. • During initial processing, control processing corresponding to operation signal is suspended. The control process- ing is resumed after initial processing is completed.
  • Page 60 (4) Frequency control • Depending on capacity required, capacity control change and frequency change are performed to keep constant evaporation temperature in cooling operations, and high pressure saturation temperature in heating operation. • Frequency change is perfprmed at the rate of 2Hz/second across 20 ~ 105Hz range. Frequency control starting •...
  • Page 61 3-2 Back up of frequency control by bypass valve (PUHY-P200·250YMF-B, PURY-(P)200·250YMF-C) During 20Hz operations, frequency is backed up by turning on (opening) bypass valve (SV2). • Cooling During 20Hz operations 3 minutes after starting compressor, bypass valve is turned on when, Ps is 1.5kg/cm G (0.15MPa) or less and turned off when Ps is 2.5kg/cm G (0.25MPa) or more.
  • Page 62 2 PURY-(P)200·250YMF-C Starting of defrost operations • After integrated 43 minutes of compressor operations, defrosting operations start when –8˚C : P-YMF-C, –6˚C : YMF-C or less of piping temperature (TH7) is detected for 3 consecutive minutes. • Forcible defrosting operations start by turning on forcible defrost switch (SW2-7) if 3 minutes have already elapsed after compressor start or completion of defrosting operations.
  • Page 63 (10) Refrigerant recovery control (PU(H)Y-(P)200·250YMF-C) Refrigerant recovery is conducted to prevent refrigerant from accumulating in the stopped unit (fan unit), the unit under cooling mode and that with heating thermostat being turned off. Start of refrigerant recovery 1 Refrigerant recovery is started when the two items below are fully satisfied. •...

  • Page 64: Control Of Bc Controller

    [2] Control of BC Controller (1) Control of SVA, SVB and SVC SVA, SVB and SVC are turned on and off depending on connection mode. Mode Cooling Heating Stop Defrost Connection (2) Control of SVM SVM is turned on and off corresponding to operation mode. Operation mode Cooling-only Cooling-main...

  • Page 65: Operation Flow Chart

    [3] Operation Flow Chart (1) Outdoor unit Start Normal operations Breaker turned on Trouble observed Stop “HO” blinks on the remote controller Note : 1 Set indoor ad- dress No. to remote controller Operation command Oil return LEV, SC coil LEV (PUHY) fully closed Operation mode...
  • Page 66 (2) BC controller (for PURY) Start Normal operations Breaker turned on Trouble observed Stop Operation command 1. Operation mode judgement (cooling-only, heating-only, cooling/heating mixed) 2. Transmission to outdoor unit Receiving operation mode command from outdoor unit Note : 1 Error mode Error stop Cooling/heating mixed Operation mode...
  • Page 67 (3) Indoor unit Start Normal operations Trouble observed Breaker turned on Stop Operation SW turned on Note :1 1. Protection function self-holding cancelled. 2. Indoor unit LEV fully closed. Note :2 Remove controller display extinguished Error mode Operation mode Error stop only for PURY Error code blinks on Heating...
  • Page 68 (4) Cooling operation Cooling operation Normal operations 4-way valve OFF Test run Stop Indoor unit fan operations Test run start Thermostat ON 3-minute restart prevention 1. Inverter output 0Hz 2. Indoor unit LEV, oil return LEV, 1. Inverter frequency control Subcool coil bypass LEV fully 2.
  • Page 69 (5) Heating operation Normal operations Heating operation Defrosting operations Note : 1 Stop Note : 2 Test run Defrosting operation 4-way valve OFF 4-way valve ON Test run start 1. Indoor unit fan stop 2. Inverter defrost frequency control 3. Indoor unit LEV fully opened, oil return LEV fully closed 4.
  • Page 70 (6) Dry operation Dry operations Normal operations Thermostat ON 4-way valve OFF Stop Test run start Note : 2 Thermostat ON Inlet temp. 18˚C Note : 1 1. Indoor unit fan stop 1. Outdoor unit (Compressor) intermit- 2. Inverter output 0Hz tent operations 3.

  • Page 71: List Of Major Component Functions

    [4] List of Major Component Functions Symbol Name Application Specification Check method Object (function) Compres- Adjust refrigerant circulation by • PU(H)Y- Low pressure shell scroll type controlling operating frequency and (P)200·250YMF-C with capacity control mechanism capacity control valve with operating •...
  • Page 72 Symbol Name Application Specification Check method Object (function) Thermistor TH10 1) Detects the compressor shell =7.465kΩ • PU(H)Y- (P-YMF-C temperature. =4057 P200·250 25/120 only) 2) Provides compressor shell Rt = YMF-C overheating protection. 7.465exp • PURY- {4057( P200·250 273+t 273+120 YMF-C 20˚C : 250kΩ...
  • Page 73 Symbol Name Application Specification Check method Object (function) Pressure 1) Liquid pressure (high-pressure) sensor detection Pressure 2) LEV control 0~30 kg/cm (0~2.94MPa) Vout 0.5~3.5 V Con- Gnd (black) nector Vout (white) 1) Intermediate pressure detection Vc (DC5V) (red) 2) LEV control Thermistor TH11 LEV control (liquid refrigerant control)

  • Page 74: Resistance Of Temperature Sensor

    [5] Resistance of Temperature Sensor Thermistor for low temperature = 15kΩ ± 3% (TH3 ~ 9) = 7.465kΩ ± 2% (TH1, 10) Thermistor R Thermistor R = 15exp {3460 ( = 7.465exp {4057 ( 273+t 273+120 273+t 273+0 –20 –10 Temperature (˚C) Temperature (˚C) = 33kΩ...

  • Page 75: Refrigerant Amount Adjustment

    6 6 6 6 6 REFRIGERANT AMOUNT ADJUSTMENT Clarify relationship between the refrigerant amount and operating characteristics of CITY MULTI, and perform service activities such as decision and adjustment of refrigerant amount on the market. [1] Refrigerant Amount and Operating Characteristics The followings are refrigerant amount and operating characteristics which draw special attention.
  • Page 76 for PU(H)Y-(P)200·250YMF-C (2) Refrigerant Volume Adjustment Operation (PU(H)Y-(P)200·250YMF-C) 1) Operating Characteristics Refrigerant Volume Characteristic items related to operating characteristics and the refrigerant volume are shown below. If the number of indoor units in operation increases during cooling, the required volume of refrigerant tends to increase (the amount of refrigerant in the accumulator tends to decrease), but the change is minimal.
  • Page 77 for PU(H)Y-(P)200·250YMF-C b Check the refrigerant volume by self-diagnosis using the LED. Set the self-diagnosis switch (SW1) as shown below and check the past information (history) concerning the refrigerant volume. 1 2 3 4 5 6 7 8 9 10 Set SW1 as shown in he figure at right.
  • Page 78 for PU(H)Y-(P)200·250YMF-C Refrigerant Volume Adjustment Mode Operation 1 Procedure Depending on the operating conditions, it may be necessary either to charge with supplementary refrigerant, or to drain out some, but if such a case arises, please follow the procedure given below flow chart. Notes 1 As the refrigerant volume can not be adjusted in the heating mode, retrieve the refrigerant, evacu- ate air and then fill the specified volume of refrigerant if it is necessary to adjust the refrigerant...
  • Page 79 for PU(H)Y-(P)200·250YMF-C In case of PUHY-200, 250YMF-C Adjustment starts. Start cooling operation of all indoor units in a test run mode. Note 1 Note 1) As the refrigerant volume can not be adjusted in the heating mode, retrieve the refrigerant, evacuate air and then fill the specified volume of refrigerant if it is necessary to adjust the refrigerant Has the volume in the winter season.
  • Page 80 for PU(H)Y-(P)200·250YMF-C In case of PUHY-P200, 250YMF-C Adjustment starts. Start cooling operation of all indoor units in a test run mode. Note 1 Note 1) As the refrigerant volume can not be adjusted in the heating mode, retrieve the refrigerant, evacuate air and then fill the specified volume of refrigerant if it is necessary to adjust the refrigerant Has the volume in the winter season.
  • Page 81 for PU(H)Y-(P)200·250YMF-C (3) Refrigerant Amount Adjustment Mode Operations (PURY-(P)200·250YMF-C) 1 Procedure Depending on the operating conditions, it may be necessary either to charge with supplementary refrigerant, or to drain out some, but if such a case arises, please follow the procedure given below flow chart. Notes 1 As the refrigerant volume can not be adjusted in the heating mode, retrieve the refrigerant, evacu- ate air and then fill the specified volume of refrigerant if it is necessary to adjust the refrigerant...
  • Page 82 for PURY-(P)200·250YMF-C In case of PURY-200, 250YMF-C Adjustment starts. Start cooling operation of all indoor units in a test run mode. Note 1 Note 1) As the refrigerant volume can not be adjusted in the heating mode, retrieve the refrigerant, evacuate air and then fill the specified volume of refrigerant if it is necessary to adjust the refrigerant Has the volume in the winter season.
  • Page 83 for PURY-(P)200·250YMF-B In case of PURY-P200, 250YMF-C Adjustment starts. Start cooling operation of all indoor units in a test run mode. Note 1 Note 1) As the refrigerant volume can not be adjusted in the heating mode, retrieve the refrigerant, evacuate air and then fill the specified volume of refrigerant if it is necessary to adjust the refrigerant Has the volume in the winter season.
  • Page 84 for PURY-(P)200·250YMF-C 1 Time required for recovering refrigerant from low pressure service port (minute) Low pressure (kg/cm G) (MPa) 3.5~4.5 4.5~5.5 5.5 ~ 7.5 Refrigerant amount (0.34~0.44) (0.44~0.54) (0.54~0.74) to be drawn out (kg) 12.0 10.5 10.0 16.0 14.0 13.0 20.0 18.0 16.5...

  • Page 85: Troubleshooting

    7 7 7 7 7 TROUBLESHOOTING [1] Principal Parts Pressure Sensor (1) Judging Failure 1) Check for failure by comparing the sensing pressure according to the high pressure/low pressure pressure sensor and the pressure gauge pressure. Turn on switches 1, 3, 5, 6 (High) and 2, 4, 5, 6 (Low) of the digital display select switch (SW1) as shown below, and the sensor pressure of the high pressure/low pressure sensors is displayed digitally by the light emitting diode LD1.
  • Page 86 * Connector connection specifications on the pressure sensor body side. The connector’s pin numbers on the pressure sensor body side differ from the pin numbers on the main circuit board side. Sensor Body Side MAIN Board Side Pin 1 Pin 3 Vout Pin 2 Pin 2...
  • Page 87 Solenoid Valve (SV1~6) (PURY-(P)200·250YMF-C) Check if the control board’s output signals and the operation of the solenoid valves match. Setting the self-diagnosis switch (SW1) as shown in the figure below causes the ON signal of each relay to be output to the LED’s.
  • Page 88 (d) The refrigerant flow is as following figure. Hot gas (high pressured) flows in cooling mode and cool gas/liquid (low pressured) flows in heating mode. Please refer to the Refrigerant Circuit Diagram. And, ON/OFF of Solenoid valve is depends on the amount of running indoor units, ambient temperature and so on.
  • Page 89 Outdoor LEV The valve opening angle changes in proportion to the number of pulses. (Connections between the outdoor unit’s MAIN board and SLEV, LEV1 (PU(H)Y-(P)200·250YMF-C)) Pulse Signal Output and Valve Operation Output pulses change in the following orders when the Output states Output (phase) Valve is Closed...
  • Page 90 Judgment methods and likely failure mode Caution: The specifications of the outdoor unit (outdoor LEV) and indoor unit (indoor LEV) differ. For this reason, there are cases where the treatment contents differ, so follow the treatment specified for the appropriate LEV as indicated in the right column.
  • Page 91 Outdoor LEV (SLEV) Coil Removal Procedure (configuration) 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 Indentation for Stopper (12 places around the circumference) Lead Wires ...
  • Page 92 Check Valves Block (PURY-(P)200·250YMF-C) The refrigerant flow in the pipe 6, 7, 8 and 9 are depend on ON/OFF of the SV3, 4, 5 and 6. Please confirm by LED monitor display. You can open the cap of valve A, B and C, but 3 types of hexagon socket screw keys. The size is as follows. * Closed torque : A : 1.7kg·m (0.17N·m) B : 20kg·m (2.0N·m) C : 13kg·m (1.3N·m)
  • Page 93 Intelligent Power Module (IPM) Measure resistances between each terminal of IPM with tester, and use the results for troubleshooting. Specified resistance value is dependent on tester type to be used for resistance measurement, because diode inside IPM has non-linearity, thus difference of impedance and voltage in tester being influential. As the internal impedance of resistance range of analog tester equals to the center value of meter indication, the affect of internal impedance can be minimized if the tester having close center value of resistance range.
  • Page 94 (2) Trouble and remedy of remote controller Symptom Cause Checking method & countermeasure Despite pressing of 1) M-NET transmission power source is not supplied a) Check transmission terminal block of remote controller from outdoor unit. remote controller for voltage. switch, operation 1 Main power source of outdoor unit is not i) In case of 17 ~ 30V →...
  • Page 95 Symptom Cause “HO” display on re- (Without using MELANS) mote controller does 1) Outdoor unit address is set to “000.” not disappear and 2) Erroneous address. switch is ineffective. 1 Address setting miss of indoor unit to be coupled with remote controller. (Indoor unit = remote controller - 100.) 2 Address setting miss of remote controller.
  • Page 96 Symptom Cause Checking method & countermeasure “88” appears on re- [Generates at registration and confirmation] a) Confirm the address of unit to be mote controller at the 1) Erroneous address of unit to be coupled. coupled. registration and 2) Slipping off of transmission line of unit to be coupled b) Check the connection of transmission access remote (No connection).
  • Page 97 Transmission Power Circuit (30 V) Check Procedure If “ ” is not displayed by the remote control, investigate the points of the trouble by the following procedure and correct it. Check Item Judgment Response Disconnect the transmission line from TB3 DC24~30 V Check the transmission line for the following, and and check the TB3 voltage.
  • Page 98 (3) Investigation of transmission wave shape/noise Control is performed by exchanging signals between outdoor unit, indoor unit and remote controller by M-NET transmission. If noise should enter into the transmission line, the normal transmission will be hindered causing erroneous operation. 1) Symptom caused by the noise entered into transmission line Cause Erroneous operation...
  • Page 99 3) Checking and measures to be taken (a) Measures against noise Check the items below when noise can be confirmed on wave shape or the error code in the item 1) is generated. Items to be checked Measures to be taken 1 Wiring of transmission and power lines in Isolate transmission line from power line (5cm or more).
  • Page 100 4) Treatment of Inverter and Compressor Troubles If the compressor does not work when error codes 4240, 4250, 4340 or 4350 are detected, determine the point of malfunction by following the steps in the LED monitor display and countermeasures depending on the check code displayed, then perform the procedures below.
  • Page 101 5) Treatment of Fan Motor Related Troubles Condition Possible Cause Check Method and Treatment 1 It won’t run for 20 minutes 1) The power supply voltage If there is an open phase condition before the breaker, after or longer when the AK is abnormal.
  • Page 102 6) Troubleshooting at breaker tripping Check items Measures to be taken 1 Check the breaker capacity. The breaker’s capacity should be proper. 2 Check the a short circuit or grounding in the electrical Correct any defects. system other than the inverter. 3 Check the resistance between terminals on the terminal Check each part inside the inverter power circuit block TB1A for power source.
  • Page 103 Individual Parts Failure Judgment Methods. Part Name Judgment Method Diode Stack (DS) Refer to “Judging Diode Stack Failure.” Intelligent Power Module(IPM) Refer to “Judging IPM Failure.” Electromagnetic Contactor (52C) Measure the resistance value at each terminal. 1/L1 3/L2 5/L3 Check Location Judgment Value A1-A2 0.1k~1.3kΩ...
  • Page 104 Motor (Compressor) White Black Black Capacitor (C2,C3) G/A board –103–...
  • Page 105 (4) Troubleshooting the major components of the BC controller 1) Pressure sensor Pressure sensor troubleshooting flow START Note 1 Check pressure sensor, PS1, PS3, connectors for discon- nection, looseness, or incor- rect attachment. Take corrective action. Unit running? Note 2 Check on the LED monitor dis- play.
  • Page 106 Note 1 : • Symptoms of incorrect connection of BC controller pressure sensor to the board Symptom Cooling-only Cooling-principal Heating-only Heating-principal Insufficient SC11 large Warm indoor SC SC11 small Insufficient heating SC11 large cooling. SC16 small small. Warm in- SC16 small Warm indoor SC small SC16 small Normal...
  • Page 107 2) Temperature Sensor Thermistor troubleshooting flow Start Note 1 Disconnect applicable thermistor connector from the board. Note 2 Measure temperature of applicable thermistor (actual measured value). Note 3 Check thermistor resistance value. Compare temperature for thermistor resistance value with actual mea- sured valued.
  • Page 108 Note 1 : • Board connector CN10 corresponds to TH11 through TH14, while connector CN11 corresponds to TH15 through TS15. Remove the applicable connector and check the sensor for each number. Note 2, 3 : 1. Pull the sensor connector from the I/O board. Do not pull on the lead wire. 2.
  • Page 109 3) LEV, Solenoid Valve Troubleshooting Flow No cooling No heating Note 1 Check disconnection or looseness of connectors. Is there a problem? Correct the problem. Operate in cooling or heating (1 system only when there are plural systems) Heating operation Cooling or heating operation? Note 2...
  • Page 110 1 LEV Note 1 : • Symptoms of incorrect connection to BC controller LEV board LEV No. Cooling-only Cooling-main Heating-only Heating-main ← ← ← Normal Insufficient cooling Insufficient cooling, insuf- Heating indoor SC small Insufficient cooling SH12 small, ficient heating PHM large Heating indoor SC small SC11 small...
  • Page 111 (Self-diagnostic monitor) Measured Data Signal OUTDOOR MAIN board SW1 Setting 2 3 4 5 6 7 8 9 10 – LEV1 pulse 2 3 4 5 6 7 8 9 10 – LEV 3 pulse – * There are not LEV2 and LEV4 on CMB-P-V-E. BC controller bypass 2 3 4 5 6 7 8 9 10 SH12...
  • Page 112 2 Solenoid Valve Solenoid valve troubleshooting Operation OFF? Check solenoid valve wiring for incorrect connection, and connector disconnection or looseness. No problem. Correct the problem. Operate cooler and heater for the applicable solenoid valve’s refrigerant system only. Note 1 Clicking noise produced when working timing? Remove the coil and check for...
  • Page 113 Solenoid valves (SVA, SVB, SVC, SVM) Coordination signals output from the board and solenoid valve operations. *SVM is not built in depending on models. Note 1 : (SVA, SVB, SVC) SVA, SVB and SVC are turned on and off in accordance with operation mode. Mode Cooling Heating...

  • Page 114: Bc Controller Disassembly Procedure

    [2] BC Controller Disassembly Procedure (1) Service panel Be careful on removing heavy parts. Procedure Photos & Illustrations 1. Remove the two screws securing the electric panel box, and then remove the box. 2. Remove the four screws securing the front panel and then remove the panel.
  • Page 115 (2) Control Box Be careful on removing heavy parts. Procedure Photos 1. Removing the single screw that secures the elec- tric panel box cover provides access to the box con- tents for checking. 1 Check electrical lead wires and transmission lead terminal connections.
  • Page 116 (3) Thermistor (Liquid and gas piping temperature detection) Be careful when removing heavy parts. Procedure Photos 1. Remove the service panel 1 Use the procedure under (1)-1.2 to check TH11, TH12, and TH15. 2. Disconnect the piping sensor lead from the control- ler panel.
  • Page 117 (5) LEV Be careful on removing heavy parts. Procedure Photos 1. Remove the service panel. See (1)-1.2.3.4. 2. Replace the applicable LEV. Important! 1 When performing the above procedure, be sure to LEV1 allow for enough service space in the ceiling area for welding.
  • Page 118 Check Code List Check Code Check Content 0403 Serial transmission abnormality 0900 Trial operation 1102 Discharge temperature abnormality 1111 Low pressure saturation temperature sensor abnormality (TH2) 1112 Low pressure saturation Liquid level sensing temperature sensor abnormality (TH4) 1113 temperature abnormality Liquid level sensing temperature sensor abnormality (TH3) 1301 Low pressure abnormality (OC) 1302...
  • Page 119 Check Code Check Content 6606 Communications with transmission processor abnormality 6607 No ACK abnormality 6608 No response abnormality 7100 Total capacity abnormality 7101 Capacity code abnormality 7102 Connected unit count over 7105 Address setting abnormality 7106 Characteristics setting abnormality 7107 Connection number setting abnormality 7111 Remote control sensor abnormality...

  • Page 120: Self-Diagnosis And Countermeasures Depending On The Check Code Displayed

    [3] Self-diagnosis and Countermeasures Depending on the Check Code Displayed (1) Mechanical Checking code Meaning, detecting method Cause Checking method & Countermeasure 0403 Serial If serial transmission cannot be 1) Wiring is defective. Check 1, the connections, 2, contact transmission established between the MAIN and at the connectors and 3, for broken abnormality...
  • Page 121 Checking code Meaning, detecting method Cause Checking method & Countermeasure 1102 Discharge 1. When 140˚C or more discharge 1) Gas leak, gas shortage. See Refrigerant amount check. temperature temperature is detected during abnormality operations (the first time), out- 2) Overload operations. Check operating conditions and opera- (Outdoor unit) door unit stops once, mode is...
  • Page 122 Checking code Meaning, detecting method Cause Checking method & Countermeasure 1111 1. When saturation temperature 1) Gas leak, Gas shortage. See Refrigerant amount check. pressure sensor (TH2) or liquid level de- saturation tecting temperature sensors 2) Insufficient load operations. Check operating conditions and opera- tempera- (TH3, TH4) detects -40˚C or tion status of outdoor unit.
  • Page 123 Checking code Meaning, detecting method Cause Checking method & Countermeasure 1301 Low pressure When starting from the stop mode 1) Internal pressure is dropping due Refer to the item on judging low pres- abnoramlity for the first time, (if at the start of bind to a gas leak.
  • Page 124 Checking code Meaning, detecting method Cause Checking method & Countermeasure 1302 High pressure When press. sensor detects 1kg/ 1) Fall in internal press. caused by See Trouble check of pressure sen- abnoramlity 2 G (0.098MPa) or less just be- gas leak. sor.
  • Page 125 Checking code Meaning, detecting method Cause Checking method 1500 Overcharged 1. When discharge superheart 1) Excessive refrigerant charge. Check refrigerant amount. refrigerant 10 deg is keeping for 10 minutes abnormality or discharge superheat 2) Thermistor trouble (TH1). Check resistance of thermistor. deg for 15 minutes, outdoor unit stops once, and after 3 minutes, 3) Pressure sensor trouble (63HS).
  • Page 126 Checking code Meaning, detecting method Cause Checking method & Countermeasure 1505 Suction • Operation while neglecting to open Once vacuum operation protection is pressure 1. Judging the state when the suc- ball valve. Especially for the ball commenced, do not attempt to abnormality tion pressure reaches near 0kg/ valve at low pressure side.
  • Page 127 Checking code Meaning, detecting method Cause Checking method & Countermeasure 4103 Reverse phase Reverse phase (or open phase) in 1) The phases of the power supply (L1, If there is reverse phase before the abnormality the power system is being de- L2, L3) have been reversed.
  • Page 128 Checking code Meaning, detecting method Cause Checking method & Countermeasure 4116 Fan speed (Detects only for PKFY-VAM) 1) Slipping off of fan speed detect- • Confirm slipping off of connector abnormality 1. Detecting fan speed below ing connector (CN33) of indoor (CN33) on indoor controller (motor 180rpm or over 2000rpm dur-...
  • Page 129 Checking code Meaning, detecting method Cause Checking method & Countermeasure 1 If VDC 4220 400 V is de- 1) The power supply voltage • Check if an instantaneous stop or power failure, etc. voltage tected during inverter is abnormal. has occurred. abnormality operation.
  • Page 130 Checking code Meaning, detecting method Cause Checking method & Countermeasure 4240 Over loard If IAC 32 Arms is detected con- 1) Air passage short cycle. Is the unit’s exhaust short cycling? protection tinuously for 10 minutes during op- eration of the inverter after 5 or 2) The heat exchanger is clogged.
  • Page 131 Checking code Meaning, detecting method Cause Checking method & Countermeasure 4260 Cooling fan If the heat sink temperature (THHS) 1) Same as “4230.” Same as “4230.” abnormality 100°C for 20 minutes or longer just before the inverter starts. 5101 Discharge ...
  • Page 132 Checking code Meaning, detecting method Cause Checking method & Countermeasure 1 When pressue sensor detects 5201 Pressure 1) Pressutre sensor trouble. See Troubleshooting of pressure sensor 1kg/cm G (0.098MPa) or less dur- sensor. abnormality ing operation, outdoor unit once (outdoor unit) stops with 3 minutes restarting 2) Inner pressure drop due to a leak- mode, and restarts if the detected...
  • Page 133 Checking code Meaning, detecting method Cause Checking method & Countermeasure 1 If IAC 5301 IAC sensor/ 3 Arms is detected just 6) The circuit board is defective. If none of the items in 1) to 5) is appli- circuit before the inverter starts, or cable, and if the trouble reappears abnormality If IAC...
  • Page 134 (2) Communication/system Checking Meaning, detecting method Cause Checking method & Countermeasure code 1) Two or more controllers of outdoor At the genration of 6600 error, release the error by 6600 Multiple address error unit, indoor unit, remote controller, remote controller (with stop key) and start again. BC controller, etc.
  • Page 135 Checking Meaning, detecting method Cause Checking method & Countermeasure code 6602 Transmission processor hardware Checking method and processing error Transmission line Shut off the power source of outdoor/in- installed while turning door units/BC controller and make it again. power source on? Check power source of indoor unit.
  • Page 136 Checking Meaning, detecting method Cause Checking method & Countermeasure code 6606 Communications with transmis- 1) Data is not properly transmitted due Turn off power sources of indoor unit, BC controller sion processor error to casual errouneous operation of and outdoor unit. the generating controller.
  • Page 137 Checking Meaning, detecting method code 6607 No ACK error When no ACK signal is detected in 6 continuous times with 30 second interval by transmission side controller, the transmission side detects error. Note: The address/attribute shown on remote controller indicates the controller not providing the answer (ACK).
  • Page 138 Checking Meaning, detecting method code 6607 No ACK error When no ACK signal is detected in 6 continuous times with 30 second (continued) interval by transmission side controller, the transmission side detects error. Note: The address/attribute shown on remote controller indicates the controller not providing the answer (ACK).
  • Page 139 Checking Meaning, detecting method code 6607 No ACK error When no ACK signal is detected in 6 continuous times with 30 second (continued) interval by transmission side controller, the transmission side detects error. Note: The address/attribute shown on remote controller indicates the controller not providing the answer (ACK).
  • Page 140 Checking Meaning, detecting method code 6607 No ACK error When no ACK signal is detected in 6 continuous times with 30 second (continued) interval by transmission side controller, the transmission side detects error. Note: The address/attribute shown on remote controller indicates the controller not providing the answer (ACK).
  • Page 141 Checking Meaning, detecting method Cause Checking method & Countermeasure code 6608 No response error 1) At the collision of mutual transmis- a) Generation at test run. sion data when transmission wiring Turn off the power sources of OC unit, IC unit Though acknowledgement of re- is modified or the polarity is and Fresh Master for more than 5 minutes si-...
  • Page 142 Checking Meaning, detecting method Cause Checking method & Countermeasure code 7102 Connected unit count over 2) The Outdoor unit address is being a) Check for the model total (capacity code total) set to 51~100 under automatic ad- of indoor units connected. dress mode (Remote controller dis- plays “HO”).

  • Page 143: Led Monitor Display

    [4] LED Monitor Display (1) How to read LED for service monitor By setting of DIP SW1-1 ~ 1-8, the unit operating condition can be observed with the service LED on the control circuit board. (For the relation of each DIP SW to the content, see the table provided.) As shown in the figure below, the LED consist of 7 segments is put in 4 sets side by side for numerical and graphic display.
  • Page 144 1 PU(H)Y-(P)200·250YMF-C E: E2 Contents stored in the E2PROM; M: Monitored by the IC through communications; E*: Stored in service memory. Item Display Remarks 12345678910 0000000000 Relay Output COMP Crankcase 21S4 Lights for LD8 is a relay output indicator which Display 1 (Lights Operat- Heater ON...
  • Page 145 for PU(H)Y-(P)200·250YMF-C Item Display Remarks 12345678910 1010100000 Outdoor Unit High Outlet Overcur- Heat Sink Overcur- Over- Lights up if an error Preliminary Error Pressure Pressure Tempera- rent Thermostat rent charged delay has occurred History Error 1, 2 Error ture Error Protection Operation Break...
  • Page 146 for PU(H)Y-(P)200·250YMF-C Item Display Remarks 12345678910 0010110000 THHS Data -99.9 ~ 999.9 ↑ 1010110000 HPS Data ↑ 0110110000 TH7 Data ↑ 1110110000 TH8 Data ↑ 0001110000 TH9 Data ↑ 1001110000 TH10 Data ↑ 0101110000 LPS Data α 0C 1101110000 0 ~ 9.999 α...
  • Page 147 for PU(H)Y-(P)200·250YMF-C When there is an error stop with No95-121,the data on error stops or the data immediately before the error postpone- ment stop, which is stored in service memory, are displayed. Item Display Remarks 12345678910 1100101000 IC7 Address/ 0 ~ 99 0 ~ 99 Capacity Code ↑...
  • Page 148 for PU(H)Y-(P)200·250YMF-C When there is an error stop with No95-121,the data on error stops or the data immediately before the error postpone- ment stop, which is stored in service memory, are displayed. Item Display Remarks 12345678910 α 0C* 0000111000 0 ~ 9.999 1000111000 -99.9 ~ 999.9 ↑...
  • Page 149 for PU(H)Y-(P)200·250YMF-C Item Display Remarks 12345678910 0011000100 IC13 room -99.9 ~ 999.9 Temperature ↑ 1011000100 IC14 room Temperature ↑ 0111000100 IC15 room Temperature ↑ 1111000100 IC16 room Temperature ↑ 0000100100 IC1 Liquid Pipe Temperature ↑ 1000100100 IC2 Liquid Pipe Temperature ↑...
  • Page 150 for PU(H)Y-(P)200·250YMF-C Item Display Remarks 12345678910 0110010100 IC7 Gas Pipe -99.9 ~ 999.9 Temperature ↑ 1110010100 IC8 Gas Pipe Temperature ↑ 0001010100 IC9 Gas Pipe Temperature ↑ 1001010100 IC10 Gas Pipe Temperature ↑ 0101010100 IC11 Gas Pipe Temperature ↑ 1101010100 IC12 Gas Pipe Temperature ↑...
  • Page 151 for PU(H)Y-(P)200·250YMF-C Item Display Remarks 12345678910 0001001100 IC9 SC -99.9 ~ 999.9 ↑ 1001001100 IC10 SC ↑ 0101001100 IC11 SC ↑ 1101001100 IC12 SC ↑ 0011001100 IC13 SC ↑ 1011001100 IC14 SC ↑ 0111001100 IC15 SC ↑ 1111001100 IC16 SC 0000101100 IC1 LEV Opening 0 ~ 9999...
  • Page 152 for PU(H)Y-(P)200·250YMF-C Item Display Remarks 12345678910 10100111000 IC6 Operation Mode 0110011100 IC7 Operation Mode 11100111000 IC8 Operation Mode 0001011100 IC9 Operation Mode 0: Stop 1: Fan 1001011100 IC10 Operation 2: Cooling Mode 3: Heating 4: Dry 0101011100 IC11 Operation Mode 1101011100 IC12 Operation Mode...
  • Page 153 2 PURY-(P)200·250YMF-C E: E2 Contents stored in the E2PROM; M: Monitored by the IC through communications; E*: Stored in service memory. Item Display Remarks 12345678910 0000000000 Relay Output COMP Crankcase 21S4 Lights for LD8 is a relay output indicator which Display 1 (Lights Operat- Heater ON...
  • Page 154 for PURY-(P)200·250YMF-C Item Display Remarks 12345678910 1010100000 Outdoor Unit High Discharge Overcur- Heat Sink Overcur- Over- Lights up if an error Preliminary Error Pressure Pressure Tempera- rent Thermostat rent charged delay has occurred History Error 1, 2 Error ture Error Protection Operation Break...
  • Page 155 for PURY-(P)200·250YMF-C Item Display Remarks 12345678910 0010110000 THHS Data -99.9 ~ 999.9 ↑ 1010110000 HPS Data ↑ 0110110000 TH7 Data 1110110000 0001110000 TH9 Data -99.9 ~ 999.9 ↑ 1001110000 TH10 Data ↑ 0101110000 LPS Data α OC 1101110000 0 ~ 9.999 α...
  • Page 156 for PURY-(P)200·250YMF-C When there is an error stop with No95-121,the data on error stops or the data immediately before the error postpone- ment stop, which is stored in service memory, are displayed. Item Display Remarks 12345678910 1100101000 IC7 Address/ 0 ~ 99 0 ~ 99 Capacity Code ↑...
  • Page 157 for PURY-(P)200·250YMF-C When there is an error stop with No95-121,the data on error stops or the data immediately before the error postpone- ment stop, which is stored in service memory, are displayed. Item Display Remarks 12345678910 α OC* 0000111000 0 ~ 9.999 1000111000 -99.9 ~ 999.9 ↑...
  • Page 158 for PURY-(P)200·250YMF-C Item Display Remarks 12345678910 0011000100 BC LEV 12 Data -99.9 ~ 999.9 ↑ 1011000100 BC LEV 3 Data ↑ 0111000100 BC LEV 4 Data 1111000100 ↑ 0000100100 IC1 liquid Pipe ↑ Temperature 1000100100 IC2 liquid Pipe ↑ Temperature 0100100100 IC3 liquid Pipe ↑...
  • Page 159 for PURY-(P)200·250YMF-C Item Display Remarks 12345678910 0110010100 IC7 Gas Pipe -99.9 ~ 999.9 Temperature ↑ 1110010100 IC8 Gas Pipe Temperature ↑ 0001010100 IC9 Gas Pipe Temperature ↑ 1001010100 IC10 Gas Pipe Temperature ↑ 0101010100 IC11 Gas Pipe Temperature ↑ 1101010100 IC12 Gas Pipe Temperature ↑...
  • Page 160 for PURY-(P)200·250YMF-C Item Display Remarks 12345678910 0001001100 IC9 SC -99.9 ~ 999.9 ↑ 1001001100 IC10 SC ↑ 0101001100 IC11 SC ↑ 1101001100 IC12 SC ↑ 0011001100 IC13 SC ↑ 1011001100 IC14 SC ↑ 0111001100 IC15 SC ↑ 1111001100 IC16 SC 0000101100 IC1 LEV Opening 0 ~ 9999...
  • Page 161 for PURY-(P)200·250YMF-C Item Display Remarks 12345678910 10100111000 IC6 Operation Mode/ Branch Number On the left 0110011100 IC7 Operation Mode/ (LD1~LD4), the IC Branch Number address, and on the right (LD5~LD8), the 11100111000 IC8 Operation Mode/ capacity code is Branch Number displayed (displayed alternately every 5 0001011100...

  • Page 162: Preparation, Repairs And Refrigerant Refilling When Repairing Leaks

    8 PREPARATION, REPAIRS AND REFRIGERANT REFILLING WHEN REPAIRING LEAKS [1] Location of leaks: Extension piping or indoor units (when cooling) 1 Connect a pressure gauge to the low-pressure servicing check joint CJ2. 2 Test run all indoor units in cooling mode. 1.
  • Page 163 Check the Tc and TH7 data (PUHY-P200·250YMF-C). (The self-diagnosis switch (SW1) on the MAIIN board of the outdoor unit can be used to display this data on the LED.) 1. If Tc – TH7 is 10 degrees or more ... Continue to step 3. 2.

  • Page 164: Location Of Leaks: Outdoor Unit (When Heating)

    [4] Location of leaks: Outdoor unit (when heating) 1 Remove any refrigerant from the entire system (outdoor unit, extension piping and indoor units). Reclaim the refrigerant; do not discharge it into the air. 2 Repair the leaks. 3 After the leaks are repaired, replace the dryer with a new one and extract all of the air from the entire system to create a vacuum.
  • Page 165 9 CHECK THE COMPOSITION OF THE REFRIGERANT (PURY-P200·250YMF-C only) Start Test run all indoor units. Are all units operating stably? (Note 1) Is the refrigerant composition of αOC correct? (Note 2) Check TH2, TH9, LPS and the CS Finished checking the circuit block and correct any malfunc- composition.
  • Page 166 Note 1 Wait until the units stabilize as described in the refrigerant amount adjustment procedure in “Chapter 6”. Note 2 After the units are operating stably, check that the refrigerant composition of αOC is within the following ranges, indicating that the composition check is finished. αOC = 0.20 ~ 0.26 If the accumulator liquid level AL = 0 when cooling: αOC = 0.23 ~ 0.34...

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