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Daikin ALTHERMA HT ERSQ 011 AA Service Manual

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ESIE09-08A

Service Manual

Daikin ALTHERMA HT
ERSQ 011/014/016 AA V1, Y1
ERRQ 011/014/016 AA V1, Y1
EKHBRD 011/014/016 AA/AB/AC V1, Y1
R-410A, R-134a
EKHTS(U) 200/260 A, AB, AC
EKBUHAA6 V3, W1
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Summary of Contents for Daikin ALTHERMA HT ERSQ 011 AA

  • Page 1: Service Manual

    ESIE09-08A Service Manual Daikin ALTHERMA HT ERSQ 011/014/016 AA V1, Y1 ERRQ 011/014/016 AA V1, Y1 EKHBRD 011/014/016 AA/AB/AC V1, Y1 R-410A, R-134a EKHTS(U) 200/260 A, AB, AC EKBUHAA6 V3, W1...

  • Page 3: Table Of Contents

    ESIE09-08A Table of Contents Table of Contents ................i 1. Introduction......................vi Safety Cautions....................vi PREFACE......................x Part 1 - General Information ............1 1. Model Names of Indoor/Outdoor Units & Tanks ..........2 Part 2 - Specifications..............5 1. Specifications ...................... 6 Outdoor Units .......................6 Indoor Unit......................8 Part 3 - Refrigerant Circuit &...
  • Page 4 ESIE09-08A Normal Operation ....................55 Compressor PI Control ..................56 Electronic Expansion Valve PI Control R-410A circuit........57 Electronic Expansion Valve PI Control R-134a circuit........57 3. Special Control....................58 Startup Control....................58 Defrosting Operation ..................59 Pump-down Residual Operation.................60 Stopping Operation.....................61 4. Protection Control ..................... 62 High Pressure Protection Control ...............62 Low Pressure Protection Control................64 Discharge Pipe Protection Control ..............66...
  • Page 5 ESIE09-08A “C4” Indoor Unit: Malfunction of Thermistor (R3T) Liquid Thermistor R-410A “C5” Indoor Unit: Malfunction of Tank Thermistor (R2T)......151 “C9” Indoor Unit: Return Water Thermistor (R4T) .........152 3.10 “CA” Indoor Unit: Leaving Water Thermistor Error (R5T)......153 3.11 “CJ” Indoor Unit: Malfunction of Thermostat Sensor in Remote Controller ..154 3.12 “E1”...
  • Page 6 ESIE09-08A Board199 3.49 “LH” Indoor Unit: Converter Error ..............200 3.50 “P1” Outdoor Unit: High Voltage of Capacitor in Main Inverter Circuit ..201 3.51 “P1” Indoor Unit: High Voltage of Capacitor in Main Inverter Circuit....202 3.52 “PJ” Indoor Unit: Faulty Combination of PCB ..........203 3.53 “U0”...
  • Page 7 ESIE09-08A Service Tools ....................283 Index ....................i Drawings & Flow Charts ............... iii Table of Contents...

  • Page 8: Introduction

    Introduction ESIE09-08A 1. Introduction Safety Cautions  Be sure to read the following safety cautions before conducting repair work. Cautions and  The caution items are classified into “ Warning” and “ Caution”. The “ Warning” items Warnings are especially important since they can lead to death or serious injury if they are not followed closely. The “...

  • Page 9: Cautions Regarding Products After Repair

    ESIE09-08A Introduction Caution Do not repair the electrical components with wet hands. Working on the equipment with wet hands can cause an electrical shock. Do not clean the heat pump by splashing water. Washing the unit with water can cause an electrical shock. Be sure to provide the grounding when repairing the equipment in a humid or wet place, to avoid electrical shocks.

  • Page 10: Inspection After Repair

    Introduction ESIE09-08A Warning Do not damage or modify the power cable. Damaged or modified power cable can cause an electrical shock or fire. Placing heavy items on the power cable, and heating or pulling the power cable can damage the cable. Do not mix air or gas other than the specified refrigerant (R-410A / R-134a) in the refrigerant system.

  • Page 11: Using Icons

    ESIE09-08A Introduction Caution Check the grounding, and repair it if the equipment is not properly grounded. Improper grounding can cause an electrical shock. Be sure to measure the insulation resistance after the repair, and make sure that the resistance is 1 Mohm or higher. Faulty insulation can cause an electrical shock.

  • Page 12: Preface

    This is the new service manual for Daikin's Year 2009 Daikin Altherma HT (high temperature) air to water heat pump. Daikin offers a wide range of models to respond to the residential heating market. We are confident that customers will be able to find the models that best suit their needs.

  • Page 13: Part 1 - General Information

    ESIE09-08A Part 1 - General Information 1. Model Names of Indoor/Outdoor Units & Tanks ..........2 General Information...

  • Page 14: Model Names Of Indoor/Outdoor Units & Tanks

    Model Names of Indoor/Outdoor Units & Tanks ESIE09-08A 1. Model Names of Indoor/Outdoor Units & Tanks Indoor Units Type Model Name Version Power Supply EKHBRD EKHBRD Outdoor Units Type Model Name Version Power Supply ERRQ ERRQ ERSQ ERSQ General Information...
  • Page 15 ESIE09-08A Model Names of Indoor/Outdoor Units & Tanks Tank Model Name Version EKHTS 200 EKHTS 260 EKHTSU 200 EKHTSU 260 General Information...
  • Page 16 Model Names of Indoor/Outdoor Units & Tanks ESIE09-08A General Information...

  • Page 17: Part 2 - Specifications

    ESIE09-08A Part 2 - Specifications 1. Specifications ...................... 6 Outdoor Units .......................6 Indoor Unit......................8 Specifications...

  • Page 18: Specifications

    Ambient conditions: 7°CDB/6°CWB Condition 3 EW: 30°C, LW: 35°C, ΔT=5°C Ambient conditions: 7°CDB/6°CWB Technical Specifications Outdoor units ER(S/R)Q011AA(V1/Y1) ER(S/R)Q014AA(V1/Y1) ER(S/R)Q016AA(V1/Y1) Casing Colour Daikin White Daikin White Daikin White Material Painted galvanised steel Painted galvanised steel Painted galvanised steel Dimensions Unit Height 1345...

  • Page 19: Electrical Specifications

    ESIE09-08A Specifications Outdoor units ER(S/R)Q011AA(V1/Y1) ER(S/R)Q014AA(V1/Y1) ER(S/R)Q016AA(V1/Y1) Sound Level Heating Sound Power See technical data (nominal) Sound Pressure Refrigerant Type R-410A R-410A R-410A Charge Control Expansion valve (electronic) Expansion valve (electronic) Expansion valve (electronic) Nr of Circuits Refrigerant Oil Type Daphne FVC68D Daphne FVC68D Daphne FVC68D...

  • Page 20: Indoor Unit

    Specifications ESIE09-08A Indoor Unit Capacity Information For combination Indoor Units EKHBRD011AA/AB/AC(V1/Y1) EKHBRD014AA/AB/AC(V1/Y1) EKHBRD016AA/AB/AC(V1/Y1) indoor units + Condition 1 Heating Nominal outdoor units capacity Heating PI Nominal 3,57 4,66 5,57 Nominal 3,08 3,00 2,88 Condition 2 Heating Nominal capacity Heating PI Nominal 4,40 5,65...
  • Page 21 ESIE09-08A Specifications Indoor units EKHBRD011AA/AB/AC(V1/Y1) EKHBRD014AA/AB/AC(V1/Y1) EKHBRD016AA/AB/AC(V1/Y1) Main components Refrigerant side Type Plate heat exchanger Plate heat exchanger Plate heat exchanger heat exchanger Quantity 1 (60 plates) 1 (60 plates) 1 (60 plates) Material AISI 316 AISI 316 AISI 316 Insulation material EPDM Thermal...
  • Page 22 Specifications ESIE09-08A Electrical Specifications Power Supply Name EKHBRD(011/014/016)AA/AB/ EKHBRD(011/014/016)AA/AB/ ACV1 ACY1 Phase Frequency Voltage 220-240 380-415 Voltage Range Minimum Maximum Ω Current Z-max 0,34 0,32 0,32 Minimum Ssc value Equipment complying with EN/IEC 61000-3-12 Maximum Heating 22,5 23,8 23,8 12,5 running Current Recommended fuses Wiring...

  • Page 23: Part 3 - Refrigerant Circuit & Functional Parts

    ESIE09-08A Part 3 - Refrigerant Circuit & Functional Parts 1. Refrigerant Circuit .................... 12 Outdoor Unit.................... 12 Indoor Unit ....................14 2. Functional Parts Layout ..................17 ERRQ 011/014/016 AAV1, ERSQ 011/014/016 AAV1........17 ERRQ 011/014/016 AAY1, ERSQ 011/014/016 AAY1........19 EKHBRD 011/014/016 AA(V1/Y1) ..............21 EKHBRD 011/014/016 AB/AC(V1/Y1)............23 EKHTS 200/260 A/AB/AC ................24 EKHTSU 200/260 A/AB/AC ................26...

  • Page 24: Refrigerant Circuit

    Refrigerant Circuit ESIE09-08A 1. Refrigerant Circuit Outdoor Unit ERRQ - ERSQ No. in refrigerant Symbol Name Major Function system diagram Inverter compressor is operated on frequencies between 36 Hz and 195 Hz by using the Inverter compressor (INV) inverter. In total there are 31 steps. Since the system is of air heat exchanging type, the fan is operated at 8 (9)-step rotation speed Inverter fan by using the inverter.
  • Page 25 ESIE09-08A Refrigerant Circuit Refrigerant Circuit...

  • Page 26: Indoor Unit

    Refrigerant Circuit ESIE09-08A Indoor Unit EKHBRD 011/014/016 AA/AB/AC(V1/Y1) No. in refrigerant Symbol Name Major Function system diagram Inverter compressor is operated on frequencies between 40 Hz and 210 Hz by using the Inverter compressor on R-134a inverter. Max. of 30 steps. Used to switch the operation mode between heating and defrost.
  • Page 27 ESIE09-08A Refrigerant Circuit EKHBRD 011/014/016 AA(V1/Y1) Refrigerant Circuit...
  • Page 28 Refrigerant Circuit ESIE09-08A EKHBRD 011/014/016 AB/AC(V1/Y1) Refrigerant Circuit...

  • Page 29: Functional Parts Layout

    ESIE09-08A Functional Parts Layout 2. Functional Parts Layout ERRQ 011/014/016 AAV1, ERSQ 011/014/016 AAV1 Bird’s-eye view Solenoid valve S1NPH High pressure sensor Oil separator Y1S 4-way valve Service port S1NPL Low pressure sensor Accumulator Y3S Solenoid valve S1HP High pressure switch R2T Discharge thermistor Service port liquid Service port gas...
  • Page 30 Functional Parts Layout ESIE09-08A Back view R6T Subcool thermistor R3T Suction 1 thermistor R5T Suction 2 thermistor R1T Ambient thermistor R8T Liquid pipe 2 thermistor R4T Coil thermistor R7T Liquid pipe 1 thermistor Refrigerant Circuit...

  • Page 31: Errq 011/014/016 Aay1, Ersq 011/014/016 Aay1

    ESIE09-08A Functional Parts Layout ERRQ 011/014/016 AAY1, ERSQ 011/014/016 AAY1 Bird’s-eye view S1NPH High pressure sensor Y1S 4-way valve Solenoid valve Service port Oil separator S1NPL Low pressure sensor Y3S Solenoid valve S1PH High pressure switch Accumulator R2T Discharge thermistor Service port gas Service port liquid Compressor...
  • Page 32 Functional Parts Layout ESIE09-08A Back view Subcool gas pipe thermistor Suction thermistor R1T Ambient thermistor R8T Liquid pipe thermistor Liquid pipe thermistor Refrigerant Circuit...

  • Page 33: Ekhbrd 011/014/016 Aa(V1/Y1)

    ESIE09-08A Functional Parts Layout EKHBRD 011/014/016 AA(V1/Y1) Front view 13 12 Top view Refrigerant Circuit...
  • Page 34 Functional Parts Layout ESIE09-08A Bird’s-eye view Legend Name Name High pressure sensor Refrigerant liquid connection R-410A High pressure switch Refrigerant gas connection R-410A Compressor R-134a Return water connection from tank Outlet water connection Low pressure sensor Inlet water connection 4-way valve (R-134a) Filter Accumulator R-134a Solenoid valve...

  • Page 35: Ekhbrd 011/014/016 Ab/Ac(V1/Y1)

    ESIE09-08A Functional Parts Layout EKHBRD 011/014/016 AB/AC(V1/Y1) Overview Legend Name Name Air purge valve Manometer Thermistors Pump Switchbox Pressure relieve valve Heat exchangers Service ports R134a Refrigerant liquid connection R410A Compressor R-134a Refrigerant gas connection R410A Accumulator Shut-off valves 3-way valve (option, with EKHTS tank)) Water inlet connection 4-way valve Water outlet connection...

  • Page 36: Ekhts 200/260 A/Ab/Ac

    Functional Parts Layout ESIE09-08A EKHTS 200/260 A/AB/AC Front view Tank sensor Bottom view Tank sensor Recirculation connection Hot water out Cold water in Coil in Coil out from EKHBRD towards EKHBRD Refrigerant Circuit...
  • Page 37 ESIE09-08A Functional Parts Layout Top view Worm’s-eye view Tank sensor Recirculation connection Hot water out Cold water in Coil in (from EKHBRD) Coil out (to EKHBRD) Bottom adaptor Refrigerant Circuit...

  • Page 38: Ekhtsu 200/260 A/Ab/Ac

    Functional Parts Layout ESIE09-08A EKHTSU 200/260 A/AB/AC Front view Tank sensor Refrigerant Circuit...
  • Page 39 ESIE09-08A Functional Parts Layout Bottom view Pressure relief connection Recirculation connection Hot water out Cold water in Coil in (from EKHBRD) Coil out (towards EKHBRD) Bird’s-eye view Pressure relief connection Anode Hot water pipe Heat exchanger Recirculation pipe Coil out connection towards EKHBRD Coil in connection from EKHBRD Cold water in connection Recirculation connection...
  • Page 40 Functional Parts Layout ESIE09-08A Refrigerant Circuit...

  • Page 41: Part 4 - Electrical Circuit

    ESIE09-08A Part 4 - Electrical Circuit 1. Switch Box Layout - Indoor Unit EKHBRD ............ 30 2. PCB Layout for EKHBRD 011/014/016 AA/AB/AC V1/Y1 ......34 Main PCB - A1P....................34 Control - PCB - A3P...................36 Inverter PCB - A4P.....................38 Filter PCB - A6P....................41 QA PCB - A5P....................43 Inverter Control PCB - Three Phase - A4P ............44 Inverter PCB - Three Phase - A5P..............46...

  • Page 42: Switch Box Layout - Indoor Unit Ekhbrd

    Switch Box Layout - Indoor Unit EKHBRD ESIE09-08A 1. Switch Box Layout - Indoor Unit EKHBRD EKHBRD 011/014/016 AAV1 EKHBRD 011/014/016 AAY1 Refrigerant Circuit...
  • Page 43 ESIE09-08A Switch Box Layout - Indoor Unit EKHBRD Legend Name Main PCB (A1P) Control PCB (A3P) Inverter PCB (A5P) Inverter control PCB (A4P) (only Y1) QA PCB (A5P) (only V1) Filter PCB (A6P) Digital I/O PCB (A7P ) (Optional) Demand PCB (A8P) (Optional) Terminal block X1M: Main power supply Terminal block X2M: AC connections Terminal block X3M: DC connections...
  • Page 44 Switch Box Layout - Indoor Unit EKHBRD ESIE09-08A EKHBRD 011/014/016 AB/AC V1 EKHBRD 011/014/016 AB/AC Y1 Refrigerant Circuit...
  • Page 45 ESIE09-08A Switch Box Layout - Indoor Unit EKHBRD Legend Name Main PCB (A1P) Control PCB (A3P) Inverter PCB (A5P) Inverter control PCB (A4P) (only Y1) QA PCB (A5P) (only V1) Filter PCB (A6P) Digital I/O PCB (A7P ) (Optional) Demand PCB (A8P) (Optional) Terminal block X1M: Main power supply Terminal block X3M: DC connections Terminal block X2M: AC connections...

  • Page 46: Pcb Layout For Ekhbrd 011/014/016 Aa/Ab/Ac V1/Y1

    PCB Layout for EKHBRD 011/014/016 AA/AB/AC V1/Y1 ESIE09-08A 2. PCB Layout for EKHBRD 011/014/016 AA/AB/AC V1/ Main PCB - A1P Main PCB - single phase Fuse X60A X19A X35A X33A X85A X50A 3,15A 250V green blue white white white yellow white white white...
  • Page 47 ESIE09-08A PCB Layout for EKHBRD 011/014/016 AA/AB/AC V1/Y1 Legend Connector Connected to Color Emergency switch Yellow K1E: electronic expansion valve White X12A R4T: returning water thermistor Yellow X15A White X16A White X17A R5T: leaving water thermistor Yellow X18A R3T: liquid thermistor R-410A X19A White X20A...

  • Page 48: Control - Pcb - A3P

    PCB Layout for EKHBRD 011/014/016 AA/AB/AC V1/Y1 ESIE09-08A Control - PCB - A3P Control PCB - single phase X21A X23A white orange yellow black pink green white yellow X11A blue X12A white X25A white X13A X1A blue white X14A X15A X16A X10A Fuse...
  • Page 49 ESIE09-08A PCB Layout for EKHBRD 011/014/016 AA/AB/AC V1/Y1 Legend Connector Color Connected to Blue Orange X2M [12 - 13] Yellow Black X2M [3 - 4] Pink 2-way valve (R-410A) Green Bridge with filter capacitors White X10A White X35A of PCB A1P -> 16V power supply X11A Yellow X12A...

  • Page 50: Inverter Pcb - A4P

    PCB Layout for EKHBRD 011/014/016 AA/AB/AC V1/Y1 ESIE09-08A Inverter PCB - A4P Inverter PCB - single phase Refrigerant Circuit...
  • Page 51 ESIE09-08A PCB Layout for EKHBRD 011/014/016 AA/AB/AC V1/Y1 Inverter PCB X106A X107A X111A EC09008 X21A X13A X11A X12A X51A X41A X18A X17A X32A X25A X28A X77A Legend Connector Color Connected to Function White White White X809A of PCB A5P QA PCB X11A White R6T by connector X1Y [13, 14]...
  • Page 52 PCB Layout for EKHBRD 011/014/016 AA/AB/AC V1/Y1 ESIE09-08A X51A Blue X77A Yellow K1A & connector X3Y [9, 10] Interface relay of S1PH & Q2L X106A X107A White X111A White Fin thermistor Indication power supply Fuse 1 5A, 250V for M1F, M2F Fuse 2 6,3A, 250V for Y1S, ECHC LB of PCB A6P...

  • Page 53: Filter Pcb - A6P

    ESIE09-08A PCB Layout for EKHBRD 011/014/016 AA/AB/AC V1/Y1 Filter PCB - A6P Filter PCB - single phase Refrigerant Circuit...
  • Page 54 PCB Layout for EKHBRD 011/014/016 AA/AB/AC V1/Y1 ESIE09-08A Filter PCB - A6P Legend Connector Color Connected to - function X1M [L - N] Power supply 1~230V Blue LC - NC Inverter PCB Blue X2M [10 - 11] via V5C Blue Green cable, Earth white connector...

  • Page 55: Qa Pcb - A5P

    ESIE09-08A PCB Layout for EKHBRD 011/014/016 AA/AB/AC V1/Y1 QA PCB - A5P QA PCB - single phase X809A white X801A white Fuse F3U 6,3A 250V Green X803A black QA PCB - A5P X809A X801A X803A Legend Connector Color Connected to - function X801A White X2M [8 - 9] by V5C...

  • Page 56: Inverter Control Pcb - Three Phase - A4P

    PCB Layout for EKHBRD 011/014/016 AA/AB/AC V1/Y1 ESIE09-08A Inverter Control PCB - Three Phase - A4P Inverter control PCB - three phase X803A X25A X28A X27A X77A X21A X41A X12A L11A X11A X13A X17A L21A X18A L31A Refrigerant Circuit...
  • Page 57 ESIE09-08A PCB Layout for EKHBRD 011/014/016 AA/AB/AC V1/Y1 Legend Connector Color Connected to - function Phase L1 Phase L2 Phase L3 Phase N L11A L11B - filter PCB L12A L21B - filter PCB L13A L31B - filter PCB N1B - filter PCB Ivory Inverter PCB X104A White...

  • Page 58: Inverter Pcb - Three Phase - A5P

    PCB Layout for EKHBRD 011/014/016 AA/AB/AC V1/Y1 ESIE09-08A Inverter PCB - Three Phase - A5P Inverter PCB - three phase X104A L32A X108A X32A L12A L22A X105A X111A X142A X141A X191A X109A X107A X106A Refrigerant Circuit...
  • Page 59 ESIE09-08A PCB Layout for EKHBRD 011/014/016 AA/AB/AC V1/Y1 Legend Connector Color Connected to - function L12A Reactor - phase 1 L22A Reactor - phase 2 L32A Reactor - phase 3 Compressor - phase U Compressor - phase V Compressor - phase W X32A White X104A...

  • Page 60: Digital I/O Pcb (Option Pcb A7P)

    PCB Layout for EKHBRD 011/014/016 AA/AB/AC V1/Y1 ESIE09-08A Digital I/O PCB (Option PCB A7P) Digital I/O PCB (option PCB A7P) X2A / CN2 Digital I/O PCB (option PCB A7P) X2A/CN2 Refrigerant Circuit...
  • Page 61 ESIE09-08A PCB Layout for EKHBRD 011/014/016 AA/AB/AC V1/Y1 Legend Connector Color Connected to - function White X2M [6 - 7] White X33A of main PCB (A1P) Cooling/heating ON/OFF output (optional power supply) Alarm output (optional power supply) Y1 - YC Domestic hot water mode ON/OFF output Y3 - YC Solar priority...

  • Page 62: Demand Pcb (Option Pcb A8P)

    PCB Layout for EKHBRD 011/014/016 AA/AB/AC V1/Y1 ESIE09-08A Demand PCB (Option PCB A8P) Demand PCB (option PCB A8P) X80A used in safety mixing mixing used together combination feed- station 1 station 2 with 1, 2, 3 with 5 for back used in used in and/or 4...
  • Page 63 ESIE09-08A PCB Layout for EKHBRD 011/014/016 AA/AB/AC V1/Y1 Refrigerant Circuit...
  • Page 64 PCB Layout for EKHBRD 011/014/016 AA/AB/AC V1/Y1 ESIE09-08A Refrigerant Circuit...

  • Page 65: Part 5 - Function

    ESIE09-08A Part 5 - Function 1. Operation Mode ....................54 2. Basic Control..................... 55 Normal Operation ....................55 Compressor PI Control ..................56 Electronic Expansion Valve PI Control R-410A circuit........57 Electronic Expansion Valve PI Control R-134a circuit........57 3. Special Control....................58 Startup Control....................58 Defrosting Operation ..................59 Pump-down Residual Operation.................60 Stopping Operation.....................61...

  • Page 66: Operation Mode

    Operation Mode ESIE09-08A 1. Operation Mode Operation in stop mode Indoor unit stop or Indoor unit thermostat ON thermostat OFF Malfunction/Standby Restart standby Pressure (Compressor stop) equalization prior to startup Malfunction / Standby Indoor unit stop or thermostat OFF Startup control Pump-down Heating startup •...

  • Page 67: Basic Control

    ESIE09-08A Basic Control 2. Basic Control Normal Operation  Heating Operation Outdoor Unit Actuator Operation Remarks Used for high pressure protection control, low pressure protection control, discharge pipe temperature Compressor Compressor PI control protection control, and compressor operating frequency upper limit control with inverter protection control. Outdoor unit fan STEP 7 or 8 All steps possible, mainly STEP 7 OR 8...

  • Page 68: Compressor Pi Control

    Basic Control ESIE09-08A 2.2 Compressor PI Control Compressor PI Control Carries out the compressor capacity PI control to maintain Tc at constant during heating operation to ensure stable unit performance. Outdoor compressor (R-410A) INV(Fullload) INV(Unload) INV(Fullload) INV(Unload) INV(Fullload) INV(Unload) 36.0Hz 80.0Hz 140.0Hz 39.0Hz...

  • Page 69: Electronic Expansion Valve Pi Control R-410A Circuit

    ESIE09-08A Basic Control Electronic Expansion Valve PI Control R-410A circuit Main Electronic Expansion Valve EV1 Control - Outdoor Unit Carries out the electronic expansion valve (Y1E) PI control to maintain the evaporator outlet superheated degree (SH) at constant during heating operation to make maximum use of the outdoor unit heat exchanger (evaporator).

  • Page 70: Special Control

    Special Control ESIE09-08A 3. Special Control Startup Control This control is used to equalize the pressure in the front and back of the compressor prior to the startup of the compressor, thus reducing startup loads. Furthermore, the inverter is turned ON to charge the capacitor. In addition, to avoid stresses to the compressor after the startup, the following control is made and the position of the four way valve is also determined.

  • Page 71: Defrosting Operation

    ESIE09-08A Special Control 3.2 Defrosting Operation The defrost operation is performed to solve frost on the outdoor unit heat exchanger when heating mode is active to recover the heating capacity. [Conditions to start] The defrost operation is started referring following conditions. ...

  • Page 72: Pump-Down Residual Operation

    Special Control ESIE09-08A 3.3 Pump-down Residual Operation When activating compressor, if the liquid refrigerant remains in the heat-exchanger, the liquid enters into the compressor and dilutes oil therein resulting in decrease of lubricity. Therefore, the pump-down residual operation is performed to collect the refrigerant in the heat-exchanger when the compressor is down.

  • Page 73: Stopping Operation

    ESIE09-08A Special Control Stopping Operation Operation of the actuator when the system is down, is cleared up. 3.4.1 When System is in Stop Mode OUTDOOR Actuator Operation Compressor Outdoor unit fan Four way valve Keep former condition. Main electronic expansion valve (EV1) 0 pls Subcooling electronic expansion valve (EV3) 0 pls...

  • Page 74: Protection Control

    Protection Control ESIE09-08A 4. Protection Control High Pressure Protection Control This high pressure protection control is used to prevent the activation of protection devices due to abnormal increase of high pressure and to protect compressors against the transient increase of high pressure.
  • Page 75 ESIE09-08A Protection Control In heating operation [R-134a] High pressure drop High pressure not limited Pc: HP pressure sensor detection value Pc<2.7MPa Pc>2.85MPa during - defrost - compressor stop High pressure limited INV upper limit frequency : 1-step down from current compressor frequency After 10 sec.

  • Page 76: Low Pressure Protection Control

    Protection Control ESIE09-08A 4.2 Low Pressure Protection Control This low pressure protection control is used to protect compressors against the transient decrease of low pressure. In heating operation [R-410A] Pe: LP pressure sensor detection value Pe<0.17MPa Low pressure not limited •...
  • Page 77 ESIE09-08A Protection Control In heating operation [R-134a] Pe: LP pressure sensor detection value Low pressure not limited Pe>0.23MPa Max INV freq = max RPS for each HP Pe<0.17MPa Low pressure limited INV upper limit frequency : 3-step down from current compressor frequency Pe<0.17MPa After 10 sec.

  • Page 78: Discharge Pipe Protection Control

    Protection Control ESIE09-08A 4.3 Discharge Pipe Protection Control This discharge pipe protection control is used to protect the compressor internal temperature against a malfunction or transient increase of discharge pipe temperature. INV compressor [R-410A] Discharge pipe protection HTdi : Value of INV compressor discharge pipe control not limited temperature (Tdi) compensated with outdoor air temperature...

  • Page 79: Inverter Protection Control

    ESIE09-08A Protection Control Inverter Protection Control Inverter current protection control and inverter fin temperature control are performed to prevent tripping due to a malfunction, or transient inverter overcurrent, and fin temperature increase. Inverter overcurrent protection control [R-410A] Not limited • Inverter current &...
  • Page 80 Protection Control ESIE09-08A Inverter fin temperature control [R-410A] Not limited • Tfin < 76°C & Tfin 79°C • INV upper limit frequency=max Hz Limited INV upper limit frequency: 1-step down from current compressor frequency • 10 sec. Tfin 79°C & •...

  • Page 81: Other Control

    ESIE09-08A Other Control 5. Other Control Heating Operation Prohibition  If the ambient temperature becomes higher than (24°C + value of setting [9-02]) no space heating is possible  Heating for domestic hot water is possible till 35°C ambient temperature. For more details see chapter of settings.

  • Page 82: Outline Of Control (Indoor Unit)

    Outline of Control (Indoor Unit) ESIE09-08A 6. Outline of Control (Indoor Unit) 6.1 Freeze Prevention Freeze-up The freeze-up prevention is only active when the unit is in thermo OFF condition. Prevention by [Start condition] Thermo Off AND/OR*: Condition  Outdoor ambient temperature < 4°C ...

  • Page 83: Simultaneous Demand Of Space Heating And Domestic Water Heating

    ESIE09-08A Outline of Control (Indoor Unit) Simultaneous demand of space heating and domestic water heating Space heating operation can be executed in 3 different ways:  Remote controller leaving water temperature control  External room thermostat  Remote controller room temperature control The domestic water heating operation can be controlled in 2 different ways: ...
  • Page 84 Outline of Control (Indoor Unit) ESIE09-08A Domestic hot water reheat minimum temperature [b-00] Domestic hot water reheat maximum temperature [b-01] Simultaneous demand ONLY space heating request 2. Storage operation When requesting space heating and domestic water heating (storage) at the same time, this involves that the storage function is active and the start timer is reached (setting 1) during space heating operation.
  • Page 85 ESIE09-08A Outline of Control (Indoor Unit) External room thermostat When the reheat temperature is reached, the further heat up of the domestic hot water tank will be decided by the external room thermostat thermo conditions and running timers which are programmed by the installer.
  • Page 86 Outline of Control (Indoor Unit) ESIE09-08A 2. Storage operation When requesting space heating and domestic water heating (storage) at the same time, this involves that the storage function is active and the start timer is reached (setting 1) during space heating operation.
  • Page 87 ESIE09-08A Outline of Control (Indoor Unit) Remote controller room temperature control When the reheat temperature is reached, the further heat up till storage temperature of the domestic hot water tank will be decided by the remote controller room thermostat in order to prevent that the room temperature drops too much.
  • Page 88 Outline of Control (Indoor Unit) ESIE09-08A 2. Storage operation When requesting space heating and domestic water heating (storage) at the same time, this involves that the minimum reheat temperature is reached (setting [b-00]) during space heating operation. The 3-way valve will switch over to the domestic hot water side, then the domestic water will be heated, but as soon as the room temperature drops 3°C from set point (smart logic), the 3-way valve will go to original position and start space heating till 0.5°C above set point, then the 3-way valve will switch over to the domestic hot water side and then the domestic water will be heated again till storage set...

  • Page 89: Part 6 - Test Operation

    ESIE09-08A Part 6 - Test Operation 1. Test Operation....................78 Procedure and Outline ..................78 Air Tight Test and Vacuum Drying..............80 Additional Refrigerant Charge ................81 Operation when Power is Turned On ..............85 2. Outdoor Unit PC Board Layout ................ 86 3. Field Setting ...................... 87 Field Setting from remote control...............87 Field Setting from Outdoor Unit...............115 Test Operation...

  • Page 90: Test Operation

    Test Operation ESIE09-08A 1. Test Operation Procedure and Outline Follow the following procedure to conduct the initial test operation after installation. 1.1.1 Check Work Prior to Turn Power Supply On Check the below items. Power wiring Control transmission wiring between units Earth wire Check on refrigerant piping Check air tight test and vacuum...
  • Page 91 ESIE09-08A Test Operation 1.1.2 Turn Power On Be sure to turn the power on 6 hours before starting operation to Turn outdoor unit p ower on . protect compressors. Close outside panels of the outdoor unit. Turn indoor unit p ower on . Wait until initialization period is over (up to 12 min).

  • Page 92: Air Tight Test And Vacuum Drying

    Test Operation ESIE09-08A Air Tight Test and Vacuum Drying  Air tight test: Make sure to use nitrogen gas.  Do this before powering the unit. (If the power has been turned on before the vacuuming has been done, first setting 2-21 must be used. See “Setting of Vacuuming Mode” on page 124.) ...

  • Page 93: Additional Refrigerant Charge

    ESIE09-08A Test Operation enter the pipe during work). After evacuating the system for 2 hours, pressurize the system to 0.05 MPa (vacuum break) with nitrogen gas and evacuate the system again using the vacuum pump for 1 hour to –100.7 kPa (vacuum drying). If the system cannot be evacuated to –100.7 kPa within 2 hours, repeat the operation of vacuum break and vacuum drying.

  • Page 94: Important Information Regarding The Refrigerant Used

    Test Operation ESIE09-08A 1.3.1 Important information regarding the refrigerant used This product contains fluorinated greenhouse gases covered by the Kyoto Protocol. Do not vent gases into the atmosphere. Refrigerant type: R-410A value: 1975 GWP = global warming potential Please fill in with indelible ink, ...
  • Page 95 ESIE09-08A Test Operation Procedure: Charging while the outdoor unit is at a standstill 1. Determine the weight of refrigerant to be charged additionally. Piping length is the one way length of gas or liquid piping whichever is the longest. It is not necessary to charge additionally if the piping length is under 10 m. If the piping length is over 10 m please determine the additional amount of refrigerant to be charged using the table below.

  • Page 96: Check Operation

    Test Operation ESIE09-08A 1.3.3 Check Operation  During check operation, mount front panel to avoid misjudging.  Check operation is mandatory for normal unit operation.  During this check operation different temperature should be read out.  A procedure for space heating and domestic water heating should be followed. ...

  • Page 97: Operation When Power Is Turned On

    ESIE09-08A Test Operation Operation when Power is Turned On 1.4.1 When Turning On Power First Time The unit cannot be run for up to 12 minutes to automatically set the master power and address (indoor- outdoor address, etc.). Status Outdoor unit Test lamp H2P &...

  • Page 98: Outdoor Unit Pc Board Layout

    Outdoor Unit PC Board Layout ESIE09-08A 2. Outdoor Unit PC Board Layout ER(S/R)Q (011/014/016) AAY1 ER(S/R)Q (011/014/016) AAV1 Changeover between Test cooling and heating Page Demand Batch Batch noise Individual Error (master) (slave) DIP switches (DS1-1 and DS1-2) MODE RETURN TEST RESET Sets the address again when the wiring...

  • Page 99: Field Setting

    ESIE09-08A Field Setting 3. Field Setting Field Setting from remote control Individual function of indoor unit can be changed from the remote control. At the time of installation or after service inspection / repair, make the local setting in accordance with the following description. Wrong setting may cause malfunction.
  • Page 100 Field Setting ESIE09-08A 1. Changes made to a field setting are only stored when the pr button is pressed. Pressing the z Notes : button, without pressing the pr button before, will discard the change made. 2. When you save a field setting by pressing the pr button, the complete field setting group will be saved.
  • Page 101 ESIE09-08A Field Setting 3.1.2 Setting Contents and Code No. – EKHBRD – Indoor unit EKHBRD*AA Installer setting at variance with default value First Second Default code code Setting name Date Value Date Value value Range Step Unit Remote control setup User permission level —...
  • Page 102 Field Setting ESIE09-08A Installer setting at variance with default value First Second Default code code Setting name Date Value Date Value value Range Step Unit Option setup Optional bottom plate heater installed 0 (OFF) — — Not applicable. Do not change the default value. 0 (OFF) —...
  • Page 103 ESIE09-08A Field Setting Installer setting at variance with default value First Second Default code code Setting name Date Value Date Value value Range Step Unit Leaving water temperature limits Set point: leaving water maximum temperature 37~80 °C Set point: leaving water minimum temperature 25~37 °C Not applicable.
  • Page 104 Field Setting ESIE09-08A EKHBRD*AB/AC Installer setting at variance with default value First Second Default code code Setting name Date Value Date Value value Range Step Unit Remote control setup User permission level — Room temperature compensation value –5~5 °C Not applicable. Do not change the default value. 1 (ON) —...
  • Page 105 ESIE09-08A Field Setting Installer setting at variance with default value First Second Default code code Setting name Date Value Date Value value Range Step Unit Option setup Remote controller temperature control 1 (ON) — — Backup heater kit optional setting 1 (ON) —...

  • Page 106: Detailed Explanation Of Setting Modes

    Field Setting ESIE09-08A 3.1.3 Detailed Explanation of Setting Modes [0] Remote control setup First Second Default code code Setting name value Range Step Unit Remote control setup User permission level — Room temperature compensation value –5~5 °C Status: space heating schedule timer mode 1 (ON) —...
  • Page 107 ESIE09-08A Field Setting are possible (no ON/OFF instruction). The system keeps operating. Advantage of this method is that you can simply switch off the space heating operation by pushing the y button without disabling the automatic domestic hot water storage operation (e.g. during summertime when no space heating is required).
  • Page 108 Field Setting ESIE09-08A Method 2 Space heating based on ON/OFF instruction During operation When the schedule timer switches space heating OFF, the controller will be switched off (operation LED will stop working). Note that this has no influence on the domestic water heating.
  • Page 109 ESIE09-08A Field Setting [1] Automatic storage timing for domestic water heating First Second Default code code Setting name value Range Step Unit Automatic storage timing for domestic water heating Status: night time storage 1 (ON) — — Night time storage start time 1:00 0:00~23:00 1:00...
  • Page 110 Field Setting ESIE09-08A [2] Automatic setback function First Second Default code code Setting name value Range Step Unit Automatic setback function Status: setback operation 1 (ON) — — Setback operation start time 23:00 0:00~23:00 1:00 hour Setback operation stop time 5:00 0:00~23:00 1:00...
  • Page 111 ESIE09-08A Field Setting [3] Weather dependent set point First Second Default code code Setting name value Range Step Unit Weather dependent set point Low ambient temperature (Lo_A) –10 –20~5 °C High ambient temperature (Hi_A) 10~20 °C Set point at low ambient temperature (Lo_Ti) 25~80 °C Set point at high ambient temperature (Hi_Ti)
  • Page 112 Field Setting ESIE09-08A [4] Disinfection function First Second Default code code Setting name value Range Step Unit Disinfection function Status: disinfection operation 1 (ON) — — Disinfection operation day selection Mon~Sun — — Disinfection operation start time 23:00 0:00~23:00 1:00 hour This mode will disinfect the domestic hot water tank by periodically heating the domestic water to a specific temperature.
  • Page 113 ESIE09-08A Field Setting [5] Automatic setback and disinfection set point First Second Default code code Setting name value Range Step Unit Automatic setback and disinfection set point Set point: disinfection operation temperature 60~75 °C Disinfection operation time duration 5~60 Leaving water setback temperature 0~10 °C Room setback temperature...
  • Page 114 Field Setting ESIE09-08A [6] Option setup First Second Default code code Setting name value Range Step Unit Option setup Domestic hot water tank installed 0 (OFF) — — Optional room thermostat installed 0 (OFF) — — Benefit kWh power supply mode —...
  • Page 115 ESIE09-08A Field Setting [7] Option setup First Second Default code code Setting name value Range Step Unit Option setup Optional bottom plate heater installed 0 (OFF) — — Multiple set point pattern 0 (A) — — Multiple set point 1 0 (OFF) —...
  • Page 116 Field Setting ESIE09-08A [8] Option setup First Second Default code code Setting name value Range Step Unit Option setup Remote controller temperature control 1 (ON) — — Automatic restart function/Backup heater optional 1 (ON) — — setting Emergency operation 0 (OFF) —...
  • Page 117 ESIE09-08A Field Setting  [8-03] Quiet mode The unit has a quiet mode functionality for which 3 levels can be selected:  [8-03] = 1 low noise level 1 (default)  [8-03] = 2 low noise level 2  [8-03] = 3 low noise level 3 Activating this quiet mode is done by pushing the QUIET MODE button on the remote controller or through the schedule timer.
  • Page 118 Field Setting ESIE09-08A [9] Automatic temperature compensation First Second Default code code Setting name value Range Step Unit Automatic temperature compensation Leaving water temperature compensation value –5~5 °C Domestic hot water tank compensation value –5~5 °C Thermo ON/OFF admission –5~5 °C If needed, it is possible to adjust some thermistor value of the unit by a correction value.
  • Page 119 (reference temperature) or domestic hot water temperature (pattern A). 3. Daikin does not offer any temperature reducing device (TRD). This system (multi set point control) only provides the possibility to use multi set point. It’s than also the installers responsibility to make sure that the whole system is operating well.
  • Page 120 Field Setting ESIE09-08A [B] Domestic hot water set points First Second Default code code Setting name value Range Step Unit Domestic hot water set points Set point: reheat minimum temperature 35~65 °C Set point: reheat maximum temperature 35~75 °C Status: weather dependent domestic water heating 1 (ON) —...
  • Page 121 ESIE09-08A Field Setting  [b-02] Status: defines whether the weather dependent domestic water heating is turned ON (1) or OFF (0). If enabled, the storage set point will be set weather dependent. In case of a higher ambient temperature (e.g. during summertime), the cold supply water to the mixing tap (e.g.
  • Page 122 Field Setting ESIE09-08A [C] Leaving water temperature limits First Second Default code code Setting name value Range Step Unit Leaving water temperature limits Set point: leaving water maximum temperature 37~80 °C Set point: leaving water minimum temperature 25~37 °C To prevent misuse concerning leaving water temperatures, it is possible to limit the set points. ...
  • Page 123 ESIE09-08A Field Setting [D] Domestic water heating retention times First Second Default code code Setting name value Range Step Unit Domestic water heating retention times Set point: minimum time for domestic water 5~20 — heating Set point: maximum time for domestic water 10~60 —...
  • Page 124 Field Setting ESIE09-08A [E] Service mode First Second Default code code Setting name value Range Step Unit Service mode Vacuum mode — — Pump only operation —  [E-00] Vacuum mode When recovering/vacuuming of the indoor unit is needed, field setting [E-00] should be activated. It will force the unit into thermo OFF and will open the expansion valve of the indoor unit R-134a circuit so full vacuuming is possible.
  • Page 125 ESIE09-08A Field Setting Test Operation...

  • Page 126: Field Setting From Outdoor Unit

    Field Setting ESIE09-08A Field Setting from Outdoor Unit Caution Capacity Setting after changing the main outdoor PC Board (A1P) to spare parts PC Board When you change the main PC Board (A1P) to spare parts PC Board, please carry out the following setting. Please Attach the Capacity Setting Adapter corresponding to Capacity Class (ex.
  • Page 127 ESIE09-08A Field Setting Caution Capacity Setting after changing the main indoor PC Board (A1P) to spare parts PC Board When you change the main indoor PC Board (A1P) to spare parts PC Board, please carry out the following setting. Please Attach the Capacity Setting Adapter corresponding to Capacity Class (ex. 112, 140, 160) in connector X23A. (See Below) Capacity Setting Adapter Capacity Class...
  • Page 128 Field Setting ESIE09-08A  LED’S DURING initializing: first 12 minutes after power starting       LED indication  Wait until initializing period is over before pressing buttons.  Setting by pushbutton switches The following settings are made by pushbutton switches on PC board. ...
  • Page 129 ESIE09-08A Field Setting (Set): Select mode with BS2 (SET button) in each selection step. Press BS1 (MODE button) for more than 5 sec. Setting mode 1 Press BS1(MODE button). to activate setting mode 2 (Initial condition) Monitor mode Setting mode 2 Press xx times BS2 button to select setting Check item selection (Set) Press BS3...
  • Page 130 Field Setting ESIE09-08A a. “Setting mode 1” This mode is used to set and check the following items. 1. Set items ················In order to make IND selection in a batch of outdoor unit group, change the setting. • IND selection···················································· If this setting is changed, U7 error will appear, ONLY FACTORY SETTING IS ALLOWED.
  • Page 131 ESIE09-08A Field Setting b. “Setting mode 2” Setting item Description Refrigerant recovery / Push and hold the MODE (BS1) vacuuming mode Sets to refrigerant recovery or vacuuming mode. button for 5 seconds and set to setting of R-410A circuit “Setting mode 2”. An automatic pump down operation which will collect all Automatic pump refrigerant from the field piping and indoor unit in the outdoor...
  • Page 132 Field Setting ESIE09-08A Setting item display C/H selection Setting condition display MODE TEST Low noise Demand Setting item Master Slave  Factory set  Refrigerant recovery /    Refrigerant recovery / vacuuming: OFF vacuuming mode    ...
  • Page 133 ESIE09-08A Field Setting c. Monitor mode LED display Setting item Data display        Malfunction code To enter the monitor mode, push the Contents of malfunction (the latest) table MODE (BS1) button when in “Setting Contents of malfunction ...
  • Page 134 Field Setting ESIE09-08A Push the SET button and match with the LEDs No. 1 - 15, push the RETURN button, and confirm the data for each setting.  Data such as addresses and number of units is expressed as binary numbers; the two ways of expressing are as follows: The No.
  • Page 135 ESIE09-08A Field Setting 3.2.1 Setting of Refrigerant Recovery Mode When carrying out the refrigerant collection on site, fully open the respective expansion valve of indoor and outdoor units All indoor and outdoor unit’s operation are prohibited. [Operation procedure]  In “Setting Mode 2” with units in stop mode, set “B Refrigerant Recovery / Vacuuming mode” (setting 21) to ON.
  • Page 136 Field Setting ESIE09-08A 3.2.2 Setting of Vacuuming Mode In order to perform vacuuming operation at site, fully open the expansion valves of indoor and outdoor units and turn on some solenoid valves. [Operating procedure]  In “Setting Mode 2” with units in stop mode, set “B Refrigerant Recovery / Vacuuming mode” (setting 21) to ON.

  • Page 137: Part 7 - Troubleshooting

    ESIE09-08A Part 7 - Troubleshooting 1. Symptom-based Troubleshooting ..............129 2. Troubleshooting by Remote Control............... 131 The INSPECTION / TEST Button ..............131 Self-diagnosis by Wired Remote Control............132 Operation of the Remote Controller’s Inspection / Test Operation Button..133 Remote Control Service Mode .................134 Remote Controller Self-Diagnosis Function ............136 3.
  • Page 138 ESIE09-08A 3.32 “J9” Outdoor Unit: Malfunction of Thermistor (R4T) for Subcooling Heat Ex- changer Gas Pipe183 3.33 “JA” Outdoor Unit: Malfunction of High Pressure Sensor ......184 3.34 “JA” Indoor Unit: Malfunction of High Pressure Sensor.........185 3.35 “JC” Outdoor Unit: Malfunction of Low Pressure Sensor .......186 3.36 “JC”...

  • Page 139: Symptom-Based Troubleshooting

    ESIE09-08A Symptom-based Troubleshooting 1. Symptom-based Troubleshooting Symptom Supposed Cause Countermeasure The system does not start operation at all. Blowout of fuse(s) Turn Off the power supply and then replace the fuse(s). Cutout of breaker(s) • If the knob of any breaker is in its OFF position, turn ON the power supply.
  • Page 140 Symptom-based Troubleshooting ESIE09-08A Symptom Supposed Cause Countermeasure The system These are operating sounds of the Normal operation. produces sounds. Immediately after turning ON the electronic expansion valve of the This sound becomes low after a lapse power supply, indoor unit indoor unit.

  • Page 141: Troubleshooting By Remote Control

    ESIE09-08A Troubleshooting by Remote Control 2. Troubleshooting by Remote Control The INSPECTION / TEST Button The following modes can be selected by using the [Inspection/Test Operation] button on the remote control. Depress Inspection/Test Operation button for more than 4 seconds. Local Service data can be obtained.

  • Page 142: Self-Diagnosis By Wired Remote Control

    Troubleshooting by Remote Control ESIE09-08A Self-diagnosis by Wired Remote Control Explanation If operation stops due to malfunction, the remote control’s operation LED blinks, and malfunction code is displayed. (Even if stop operation is carried out, malfunction contents are displayed when the inspection mode is entered.) The malfunction code enables you to tell what kind of malfunction caused operation to stop.

  • Page 143: Operation Of The Remote Controller's Inspection / Test Operation Button

    ESIE09-08A Troubleshooting by Remote Control Operation of the Remote Controller’s Inspection / Test Operation Button Unit Malfunction code Inspection Normal display (No display) Malfunction code blinks when a malfunction occurs. * Alternating malfunction code possible: indication for refrigerant type (IU/OU) Inspection/test Push the button.

  • Page 144: Remote Control Service Mode

    Troubleshooting by Remote Control ESIE09-08A Remote Control Service Mode How to Enter the Service Mode Field set Normal operation Service mode mode mode Push the button for 4 seconds or longer. Push the button for 4 seconds or longer. (VF020) Service Mode 1.
  • Page 145 ESIE09-08A Troubleshooting by Remote Control Mode No Function Contents and operation method Remote control display example Malfunction Display malfunction hysteresis. hysteresis display The history No. can be changed with the Unit 1 button. Malfunction code 2-U4 Malfunction code Hystory No: 1 - 5 (VE007) 1: Latest Remark: The malfunction code can give also an extra subcode (alternating).

  • Page 146: Remote Controller Self-Diagnosis Function

    Troubleshooting by Remote Control ESIE09-08A Remote Controller Self-Diagnosis Function The remote controller switches are equipped with a self diagnosis function so that more appropriate maintenance can be carried out. If a malfunction occurs during operation, the operation lamp, malfunction code and display of malfunctioning unit No. let you know the contents and location of the malfunction.
  • Page 147 ESIE09-08A Troubleshooting by Remote Control  : ON : OFF c: Blink Malfunction Operation Malfunction contents Page code lamp Referred PC board defect, E PROM defect Pump error Malfunction of moving part of electronic expansion valve (Y1E) Malfunction of capacity setting Failure of transmission (between indoor unit PC board and fan PC board) Malfunction of thermistor (R3T) for R-410A liquid/indoor unit (loose connection, disconnection, short circuit, failure)
  • Page 148 Troubleshooting by Remote Control ESIE09-08A Malfunction code indication by outdoor unit PC board Contents of malfunction Malfunction code To enter the monitor mode, push the MODE (BS1) button when in In-phase malfunction of DIII Net Detection of DIII Net “Setting mode 1”.
  • Page 149 ESIE09-08A Troubleshooting by Remote Control   : OFF c:Blink : ON Confirmation of malfunction 1 Confirmation of malfunction 2 Confirmation of malfunction 3 Confirmation of malfunction 4 Malfunction code H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P ...
  • Page 150 Troubleshooting by Remote Control ESIE09-08A Contents of malfunction Malfunction code To enter the monitor mode, push the Open phase/Power supply imbalance Imbalance of inverter power supply MODE (BS1) button when in voltage “Setting mode 1”. Faulty temperature sensor of inverter Faulty thermistor of inverter fin radiation fin Refrigerant shortage...
  • Page 151 ESIE09-08A Troubleshooting by Remote Control   : ON : OFF c:Blink Confirmation of malfunction 1 Confirmation of malfunction 2 Confirmation of malfunction 3 Confirmation of malfunction 4 Malfunction code H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P ...

  • Page 152: Troubleshooting By Indication On The Remote Controller

    Troubleshooting by Indication on the Remote Controller ESIE09-08A 3. Troubleshooting by Indication on the Remote Controller “A1 ” Indoor Unit: PC Board Defect Remote Control Display Subcode 0 Applicable Models All indoor unit models Method of Check data from E²PROM. Malfunction Detection Malfunction...

  • Page 153: A6" Indoor Unit: Pump Error (M1P) Or Other Water System Error

    ESIE09-08A Troubleshooting by Indication on the Remote Controller “A6 ” Indoor Unit: Pump Error (M1P) or Other Water System Error Remote Control Display Subcode 0 Applicable Models All indoor unit models Method of Detection by failure of signal for detecting number of turns to come from the pump motor. Detection by Malfunction failure ref.
  • Page 154 Troubleshooting by Indication on the Remote Controller ESIE09-08A “A9 ” Indoor Unit: Malfunction of Moving Part of Electronic Expansion Valve (K1E) R-410A circuit Remote Control Display Subcode 0 Applicable Models All indoor and outdoor unit models Method of Malfunction Detection Malfunction Decision Conditions ...
  • Page 155 ESIE09-08A Troubleshooting by Indication on the Remote Controller 1: Coil check method for the moving part of the electronic expansion valve Discount the electronic expansion valve from the PC board and check the continuity between the connector pins. (Normal) Pin No. 1.

  • Page 156: Ae" Indoor Unit: Water Circuit Error

    Troubleshooting by Indication on the Remote Controller ESIE09-08A “AE” Indoor Unit: Water Circuit Error Remote Control Display Subcode 0 Applicable Models All indoor unit models Method of Malfunction Detection Malfunction Decision Conditions  Blocked waterflow or heat exchanger (waterside). Supposed Causes ...

  • Page 157: Aj" Indoor Unit: Malfunction Of Capacity Determination Device

    ESIE09-08A Troubleshooting by Indication on the Remote Controller “AJ ” Indoor Unit: Malfunction of Capacity Determination Device Remote Control Display Subcode 0 Applicable Models All indoor unit models Method of Capacity is determined according to resistance of the capacity setting adapter and the memory inside the Malfunction IC memory on the indoor unit PC board, and whether the value is normal or abnormal is determined.

  • Page 158: C1" Indoor Unit: Failure Of Transmission

    Troubleshooting by Indication on the Remote Controller ESIE09-08A “C1” Indoor Unit: Failure of Transmission (Between Indoor unit PC Board and Control PC Board) Remote Control Display Subcode 0 Applicable Models All indoor unit models Method of Check the condition of transmission between indoor PC board (A1P) and PC board for control (A3P) Malfunction using computer.
  • Page 159 ESIE09-08A Troubleshooting by Indication on the Remote Controller Troubleshooting Be sure to turn off power switch before connecting or disconnecting connector, otherwise parts may be damaged. Caution the connector between indoor PC board (A1P) [X35A, X70A] and PC board for Connect the connector control (A3P) [X10A, X15A] accurately.

  • Page 160: C4" Indoor Unit: Malfunction Of Thermistor (R3T) Liquid Thermistor R-410A

    Troubleshooting by Indication on the Remote Controller ESIE09-08A “C4” Indoor Unit: Malfunction of Thermistor (R3T) Liquid Thermistor R-410A Remote Control Display Subcode 0 Applicable Models All indoor unit models Method of Malfunction detection is carried out by temperature detected by liquid thermistor. Malfunction Detection Malfunction...

  • Page 161: C5" Indoor Unit: Malfunction Of Tank Thermistor (R2T)

    ESIE09-08A Troubleshooting by Indication on the Remote Controller “C5 ” Indoor Unit: Malfunction of Tank Thermistor (R2T) Remote Control Display Subcode 0 Applicable Models All indoor unit models Method of Malfunction detection is carried out by temperature detected by tank thermistor. Malfunction Detection Malfunction...

  • Page 162: C9" Indoor Unit: Return Water Thermistor (R4T)

    Troubleshooting by Indication on the Remote Controller ESIE09-08A “C9 ” Indoor Unit: Return Water Thermistor (R4T) Remote Control Display Subcode 0 Applicable Models AII indoor unit models Method of Malfunction detection is carried out by temperature detected by return water temperature thermistor. Malfunction Detection Malfunction...

  • Page 163: Ca" Indoor Unit: Leaving Water Thermistor Error (R5T)

    ESIE09-08A Troubleshooting by Indication on the Remote Controller 3.10 “CA ” Indoor Unit: Leaving Water Thermistor Error (R5T) Remote Control Display Subcode 0 Applicable Models AII indoor unit models Method of Malfunction detection is carried out by temperature detected by leaving water temperature thermistor. Malfunction Detection Malfunction...

  • Page 164: Cj" Indoor Unit: Malfunction Of Thermostat Sensor In Remote Controller

    Troubleshooting by Indication on the Remote Controller ESIE09-08A 3.11 “CJ ” Indoor Unit: Malfunction of Thermostat Sensor in Remote Controller Remote Control Display Subcode 0 Applicable Models AII indoor unit models Method of Malfunction detection is carried out by temperature detected by remote control air temperature Malfunction thermistor.

  • Page 165: E1" Outdoor Unit: Pc Board Defect

    ESIE09-08A Troubleshooting by Indication on the Remote Controller 3.12 “E1” Outdoor Unit: PC Board Defect Remote Control Display Applicable Models ER*Q 011~016* Related to: R-410A compressor Subcode 3: see next page Method of Check data from E²PROM Malfunction Detection Malfunction When data could not be correctly received from the E²PROM Decision Conditions E²PROM: Type of nonvolatile memory.

  • Page 166: E1" Indoor Unit: Pc Board Defect

    Troubleshooting by Indication on the Remote Controller ESIE09-08A 3.13 “E1” Indoor Unit: PC Board Defect Remote Control Display Subcode 3 Applicable Models All indoor units Related to: R-134a compressor Method of Check data from E²PROM Malfunction Detection Malfunction When data could not be correctly received from the E²PROM Decision Conditions E²PROM: Type of nonvolatile memory.

  • Page 167: E3" Outdoor Unit: Actuation Of High Pressure Switch

    ESIE09-08A Troubleshooting by Indication on the Remote Controller 3.14 “E3” Outdoor Unit: Actuation of High Pressure Switch Remote Control Display Subcode 1 Applicable Models ER*Q 011~016* Method of Abnormality is detected when the contact of the high pressure protection switch opens. Malfunction Detection Malfunction...
  • Page 168 Troubleshooting by Indication on the Remote Controller ESIE09-08A Troubleshooting Be sure to turn off power switch before connecting or disconnecting connector, Caution otherwise parts may be damaged. Check for the points shown below.  Is the stop valve open?  Is the HPS connector properly connected to the main PC board? ...

  • Page 169: E3" Indoor Unit: Actuation Of High Pressure Switch

    ESIE09-08A Troubleshooting by Indication on the Remote Controller 3.15 “E3” Indoor Unit: Actuation of High Pressure Switch Remote Control Display Subcode 12 Applicable Models All indoor units Method of Abnormality is detected when the contact of the high pressure protection switch opens. Malfunction Detection Malfunction...
  • Page 170 Troubleshooting by Indication on the Remote Controller ESIE09-08A Be sure to turn off power switch before connecting or disconnecting connector, Caution otherwise parts may be damaged. Check for the points shown below.  Is the stop valve open?  Is the HPS connector properly connected to the indoor PC board? ...
  • Page 171 ESIE09-08A Troubleshooting by Indication on the Remote Controller *1: Make a comparison between the voltage of the pressure sensor (*4) and that read by the pressure gauge.(As to the voltage of the pressure sensor, make measurement of voltage at the connector, and then convert it to pressure.) Make a comparison between the high pressure value checked with the Service Tool and the voltage of the pressure sensor (see *1) *3: Make measurement of voltage of the pressure sensor.

  • Page 172: E4" Outdoor Unit: Actuation Of Low Pressure Sensor

    Troubleshooting by Indication on the Remote Controller ESIE09-08A 3.16 “E4 ” Outdoor Unit: Actuation of Low Pressure Sensor Remote Control Display Applicable Models ER*Q 011~016* Method of Abnormality is detected by the pressure value with the low pressure sensor. Malfunction Detection Malfunction Error is generated when the low pressure is dropped under specific pressure.
  • Page 173 ESIE09-08A Troubleshooting by Indication on the Remote Controller Troubleshooting Caution Is the stop valve Open the stop valve. open?  Mount a pressure gauge on the low-pressure service port.  Connect the Service Tool  Reset the operation using the remote control, and then restart the operation.

  • Page 174: E4" Indoor Unit: Actuation Of Low Pressure Sensor

    Troubleshooting by Indication on the Remote Controller ESIE09-08A 3.17 “E4 ” Indoor Unit: Actuation of Low Pressure Sensor Remote Control Display Subcode 6 Applicable Models All indoor units Method of Abnormality is detected by the pressure value with the low pressure sensor. Malfunction Detection Malfunction...
  • Page 175 ESIE09-08A Troubleshooting by Indication on the Remote Controller Be sure to turn off power switch before connecting or disconnecting connector, otherwise parts may be damaged. Caution Is the stop valve Open the stop valve. open?  Mount a pressure gauge on the low-pressure service port. ...

  • Page 176: E5" Outdoor Unit: Inverter Compressor Motor Lock

    Troubleshooting by Indication on the Remote Controller ESIE09-08A 3.18 “E5 ” Outdoor Unit: Inverter Compressor Motor Lock Remote Control Display Applicable Models ER*Q 011~016* Method of Inverter PC board takes the position signal from UVW line connected between the inverter and Malfunction compressor, and the malfunction is detected when any abnormality is observed in the phase-current waveform.

  • Page 177: E5" Indoor Unit: Inverter Compressor Motor Lock

    ESIE09-08A Troubleshooting by Indication on the Remote Controller 3.19 “E5 ” Indoor Unit: Inverter Compressor Motor Lock Remote Control Display Subcode 6 Applicable Models All indoor units Method of Inverter PC board takes the position signal from UVW line connected between the inverter and Malfunction compressor, and the malfunction is detected when any abnormality is observed in the phase-current waveform.

  • Page 178: E7" Malfunction Of Outdoor Unit Fan Motor

    Troubleshooting by Indication on the Remote Controller ESIE09-08A 3.20 “E7” Malfunction of Outdoor Unit Fan Motor Remote Control Display Applicable Models ER*Q 011~016* Method of Malfunction of fan motor system is detected according to the fan speed detected by hall IC when the fan Malfunction motor runs.
  • Page 179 ESIE09-08A Troubleshooting by Indication on the Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, or Caution parts damage may be occurred. the voltage between L1 and N on the power supply terminal board X1M fallen Correct the power supply within the range of 220 to voltage.

  • Page 180: E9" Outdoor Unit: Malfunction Of Moving Part Of Electronic Expansion Valve

    Troubleshooting by Indication on the Remote Controller ESIE09-08A 3.21 “E9 ” Outdoor Unit: Malfunction of Moving Part of Electronic Expansion Valve Remote Control Display Applicable Models ER*Q 011~016* Method of Check disconnection of connector Malfunction Check continuity of expansion valve coil Detection Malfunction Error is generated under no common power supply when the power is on.
  • Page 181 ESIE09-08A Troubleshooting by Indication on the Remote Controller 1: Coil check method for the moving part of the electronic expansion valve Disconnect the electronic expansion valve from the PC board and check the continuity between the connector pins. (Orange) 1 (Red) 2 (Yellow) 3 (Black) 4...
  • Page 182 Troubleshooting by Indication on the Remote Controller ESIE09-08A 3.22 “E9 ” Indoor Unit: Malfunction of Moving Part of Electronic Expansion Valve (K2E) R-134a circuit Remote Control Display Subcode 17 Applicable Models All indoor units Expansion valve on R-134a Method of Check disconnection of connector...
  • Page 183 ESIE09-08A Troubleshooting by Indication on the Remote Controller 1: Coil check method for the moving part of the electronic expansion valve Disconnect the electronic expansion valve from the PC board and check the continuity between the connector pins. (White) 1 (Yellow) 2 (Orange) 3 (Blue) 4...

  • Page 184: F3" Outdoor Unit: Abnormal Discharge Pipe Temperature

    Troubleshooting by Indication on the Remote Controller ESIE09-08A 3.23 “F3 ” Outdoor Unit: Abnormal Discharge Pipe Temperature Remote Control Display Applicable Models ER*Q 011~016* Method of Abnormality is detected according to the temperature detected by the discharge pipe temperature sensor. Malfunction Detection Malfunction...

  • Page 185: F3" Indoor Unit: Abnormal Discharge Pipe Temperature

    ESIE09-08A Troubleshooting by Indication on the Remote Controller 3.24 “F3 ” Indoor Unit: Abnormal Discharge Pipe Temperature Remote Control Display Subcode 19 Applicable Models All indoor units Method of Abnormality is detected according to the temperature detected by the discharge pipe temperature sensor. Malfunction Detection Malfunction...

  • Page 186: H9" Outdoor Unit: Malfunction Of Thermistor (R1T) For Outdoor Air

    Troubleshooting by Indication on the Remote Controller ESIE09-08A 3.25 “H9 ” Outdoor Unit: Malfunction of Thermistor (R1T) for Outdoor Air Remote Control Display Applicable Models ER*Q 011~016* Method of Malfunction is detected from the temperature detected by the outdoor air thermistor. Malfunction Detection Malfunction...

  • Page 187: J3" Outdoor Unit: Malfunction Of Discharge Pipe Thermistor (R2T)

    ESIE09-08A Troubleshooting by Indication on the Remote Controller 3.26 “J3 ” Outdoor Unit: Malfunction of Discharge Pipe Thermistor (R2T) Remote Control Display Applicable Models ER*Q 011~016* Method of Malfunction is detected from the temperature detected by discharge pipe temperature thermistor. Malfunction Detection Malfunction...

  • Page 188: J3" Indoor Unit: Malfunction Of Discharge Pipe Thermistor (R6T)

    Troubleshooting by Indication on the Remote Controller ESIE09-08A 3.27 “J3 ” Indoor Unit: Malfunction of Discharge Pipe Thermistor (R6T) Remote Control Display Subcode 46 Applicable Models All indoor units Method of Malfunction is detected from the temperature detected by discharge pipe temperature thermistor. Malfunction Detection Malfunction...

  • Page 189: J5" Outdoor Unit: Malfunction Of Thermistor (R3T, R5T) For Suction Pipe

    ESIE09-08A Troubleshooting by Indication on the Remote Controller 3.28 “J5 ” Outdoor Unit: Malfunction of Thermistor (R3T, R5T) for Suction Pipe 1, 2 Remote Control Display Applicable Models ER*Q 011~016* Method of Malfunction is detected from the temperature detected by the thermistor for suction pipe 1, 2. Malfunction Detection Malfunction...

  • Page 190: J5" Indoor Unit: Malfunction Of Thermistor (R7T) For Liquid R-134A

    Troubleshooting by Indication on the Remote Controller ESIE09-08A 3.29 “J5 ” Indoor Unit: Malfunction of Thermistor (R7T) for Liquid R-134a Remote Control Display Subcode 11 Applicable Models All indoor units Method of Malfunction is detected from the temperature detected by the thermistor for liquid pipe. Malfunction Detection Malfunction...

  • Page 191: Outdoor Unit Heat Exchanger

    ESIE09-08A Troubleshooting by Indication on the Remote Controller 3.30 “J6 ” Outdoor Unit: Malfunction of Thermistor (R6T) for Outdoor Unit Heat Exchanger Remote Control Display Applicable Models ER*Q 011~016* Method of Malfunction is detected from the temperature detected by the heat exchanger thermistor. Malfunction Detection Malfunction...

  • Page 192: Outdoor Unit Liquid Pipe

    Troubleshooting by Indication on the Remote Controller ESIE09-08A 3.31 “J7 ” Outdoor Unit: Malfunction of Thermistor (R7T) for Outdoor Unit Liquid Pipe Remote Control Display Applicable Models ER*Q 011~016* Method of Malfunction is detected from the temperature detected by the liquid pipe thermistor. Malfunction Detection Malfunction...
  • Page 193 ESIE09-08A Troubleshooting by Indication on the Remote Controller 3.32 “J9 ” Outdoor Unit: Malfunction of Thermistor (R4T) for Subcooling Heat Exchanger Gas Pipe Remote Control Display Applicable Models ER*Q 011~016* Method of Malfunction is detected according to the temperature detected by subcooling heat exchanger gas pipe Malfunction thermistor.

  • Page 194: Ja" Outdoor Unit: Malfunction Of High Pressure Sensor

    Troubleshooting by Indication on the Remote Controller ESIE09-08A 3.33 “JA ” Outdoor Unit: Malfunction of High Pressure Sensor Remote Control Display Applicable Models ER*Q 011~016* Method of Malfunction is detected from the pressure detected by the high pressure sensor. Malfunction Detection Malfunction When the high pressure sensor is short circuit or open circuit.

  • Page 195: Ja" Indoor Unit: Malfunction Of High Pressure Sensor

    ESIE09-08A Troubleshooting by Indication on the Remote Controller 3.34 “JA ” Indoor Unit: Malfunction of High Pressure Sensor Remote Control Display Subcode 16 Applicable Models All indoor units Method of Malfunction is detected from the pressure detected by the high pressure sensor. Malfunction Detection Malfunction...

  • Page 196: Jc" Outdoor Unit: Malfunction Of Low Pressure Sensor

    Troubleshooting by Indication on the Remote Controller ESIE09-08A 3.35 “JC ” Outdoor Unit: Malfunction of Low Pressure Sensor Remote Control Display Applicable Models ER*Q 011~016* Method of Malfunction is detected from pressure detected by low pressure sensor. Malfunction Detection Malfunction When the low pressure sensor is short circuit or open circuit.

  • Page 197: Jc" Indoor Unit: Malfunction Of Low Pressure Sensor

    ESIE09-08A Troubleshooting by Indication on the Remote Controller 3.36 “JC ” Indoor Unit: Malfunction of Low Pressure Sensor Remote Control Display Subcode 16 Applicable Models All indoor units Method of Malfunction is detected from pressure detected by low pressure sensor. Malfunction Detection Malfunction...

  • Page 198: L1" Outdoor Unit: Malfunction Of Pc Board

    Troubleshooting by Indication on the Remote Controller ESIE09-08A 3.37 “L1” Outdoor Unit: Malfunction of PC Board Remote Control Display Applicable Models ER*Q 011~016*  Detect malfunctions by current value during waveform output before compressor startup. Method of  Detect malfunctions by current sensor value during synchronized operation at the time of startup. Malfunction Detection ...

  • Page 199: L1" Indoor Unit: Malfunction Of Pc Board

    ESIE09-08A Troubleshooting by Indication on the Remote Controller 3.38 “L1” Indoor Unit: Malfunction of PC Board Remote Control Display Subcode 30 Applicable Models All indoor units  Detect malfunctions by current value during waveform output before compressor startup. Method of ...

  • Page 200: L4" Outdoor Unit: Malfunction Of Inverter Radiating Fin Temperature Rise

    Troubleshooting by Indication on the Remote Controller ESIE09-08A 3.39 “L4 ” Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise Remote Control Display Applicable Models ER*Q 011~016* Method of Fin temperature is detected by the thermistor of the radiation fin. Malfunction Detection Malfunction...
  • Page 201 ESIE09-08A Troubleshooting by Indication on the Remote Controller 3.40 “L4 ” Indoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise (R8T) Remote Control Display Subcode 8 Applicable Models All indoor units Method of Fin temperature is detected by the thermistor of the radiation fin. Malfunction If fin temperature is too high, the compressor will slow down (capacity shortage).

  • Page 202: L5" Outdoor Unit: Inverter Compressor Abnormal

    Troubleshooting by Indication on the Remote Controller ESIE09-08A 3.41 “L5 ” Outdoor Unit: Inverter Compressor Abnormal -  R-410A Remote Control Display Applicable Models ER*Q 011~016* Method of Malfunction is detected from current flowing in the power transistor. Malfunction Detection Malfunction When an excessive current flows in the power transistor.

  • Page 203: L5" Indoor Unit: Inverter Compressor Abnormal

    ESIE09-08A Troubleshooting by Indication on the Remote Controller 3.42 “L5 ” Indoor Unit: Inverter Compressor Abnormal -  R-134a Remote Control Display Subcode 13 Applicable Models All indoor units Method of Malfunction is detected from current flowing in the power transistor. Malfunction Detection Malfunction...

  • Page 204: L8" Outdoor Unit: Inverter Current Abnormal

    Troubleshooting by Indication on the Remote Controller ESIE09-08A 3.43 “L8 ” Outdoor Unit: Inverter Current Abnormal Remote Control Display Applicable Models ER*Q 011~016* Method of Malfunction is detected by current flowing in the power transistor. Malfunction Detection Malfunction When overload in the compressor is detected. Decision Conditions ...

  • Page 205: L8" Indoor Unit: Inverter Current Abnormal

    ESIE09-08A Troubleshooting by Indication on the Remote Controller 3.44 “L8 ” Indoor Unit: Inverter Current Abnormal Remote Control Display Subcode 10 Applicable Models All indoor units Method of Malfunction is detected by current flowing in the power transistor. Malfunction Detection Malfunction When overload in the compressor is detected.

  • Page 206: L9" Outdoor Unit: Inverter Start Up Error

    Troubleshooting by Indication on the Remote Controller ESIE09-08A 3.45 “L9 ” Outdoor Unit: Inverter Start up Error Remote Control Display Applicable Models ER*Q 011~016* Method of Malfunction is detected from current flowing in the power transistor. Malfunction Detection Malfunction When overload in the compressor is detected during startup Decision Conditions ...

  • Page 207: L9" Indoor Unit: Inverter Start Up Error

    ESIE09-08A Troubleshooting by Indication on the Remote Controller 3.46 “L9 ” Indoor Unit: Inverter Start up Error Remote Control Display Subcode 9 Applicable Models All indoor units Method of Malfunction is detected from current flowing in the power transistor. Malfunction Detection Malfunction When overload in the compressor is detected during startup...

  • Page 208: Board199

    Troubleshooting by Indication on the Remote Controller ESIE09-08A 3.47 “LC ” Outdoor Unit: Malfunction of Transmission between Inverter and Control PC Board Remote Control Display Applicable Models ER*Q 011~016* Method of Check the communication state between inverter PC board and control PC board by micro-computer. Malfunction Detection Malfunction...

  • Page 209: Pc Board198

    ESIE09-08A Troubleshooting by Indication on the Remote Controller 3.48 “LC ” Indoor Unit: Malfunction of Transmission between Inverter and Control PC Board Remote Control Display Subcode 29 Applicable Models All indoor units Method of Check the communication state between inverter PC board and control PC board by micro-computer. Malfunction Detection Malfunction...

  • Page 210: Lh" Indoor Unit: Converter Error

    Troubleshooting by Indication on the Remote Controller ESIE09-08A 3.49 “LH ” Indoor Unit: Converter Error Remote Control Display Subcode 2 Applicable Models All indoor units Method of Malfunction Detection Malfunction Decision Conditions  Inverter PC board problem Supposed Causes Troubleshooting Caution: Be sure to turn off the power switch before connecting or disconnecting connector, otherwise parts may be damaged.

  • Page 211: P1" Outdoor Unit: High Voltage Of Capacitor In Main Inverter Circuit

    ESIE09-08A Troubleshooting by Indication on the Remote Controller 3.50 “P1 ” Outdoor Unit: High Voltage of Capacitor in Main Inverter Circuit Remote Control Display Applicable Models ER*Q 011~016* Method of Malfunction is detected according to the voltage waveform of main circuit capacitor built in the inverter. Malfunction Detection Malfunction...

  • Page 212: P1" Indoor Unit: High Voltage Of Capacitor In Main Inverter Circuit

    Troubleshooting by Indication on the Remote Controller ESIE09-08A 3.51 “P1 ” Indoor Unit: High Voltage of Capacitor in Main Inverter Circuit Remote Control Display Subcode 6 Applicable Models All indoor units Method of Malfunction is detected according to the voltage waveform of main circuit capacitor built in the inverter. Malfunction Detection Malfunction...

  • Page 213: Pj" Indoor Unit: Faulty Combination Of Pcb

    ESIE09-08A Troubleshooting by Indication on the Remote Controller 3.52 “PJ” Indoor Unit: Faulty Combination of PCB Remote Control Display Subcode 11 Applicable Models All indoor units Method of This malfunction is detected according to communications with the inverter. Malfunction Detection Malfunction Make judgment according to communication data on whether or not the type of the inverter PCB is Decision Conditions...
  • Page 214 Troubleshooting by Indication on the Remote Controller ESIE09-08A 3.53 “U0 ” Low Pressure Drop Due to Refrigerant Shortage or Electronic Expansion Valve Failure Remote Control Display Applicable Models ER*Q 011~016* Method of Short of gas malfunction is detected by discharge pipe temperature thermistor and low pressure saturation Malfunction temperature.
  • Page 215 ESIE09-08A Troubleshooting by Indication on the Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, or Caution parts damage may be occurred. pressure is 0.25 Cooling MPa or less. Out of gas, closing of stop valve or refrigerant system is clogged.

  • Page 216: U2" Power Supply Insufficient Or Instantaneous Failure

    Troubleshooting by Indication on the Remote Controller ESIE09-08A 3.54 “U2 ” Power Supply Insufficient or Instantaneous Failure Remote Control Display Applicable Models ER*Q 011~016* Method of Detection of voltage of main circuit capacitor built in the inverter and power supply voltage. Malfunction Detection Malfunction...
  • Page 217 ESIE09-08A Troubleshooting by Indication on the Remote Controller Troubleshooting Be sure to turn off power switch before connecting or disconnecting connector, otherwise parts may be damaged. Caution Have the power supply voltages between L1 and L2, L2 and L3, and L1 and L3 fallen within Correct the power supply the range of 380 to 415V±10% (50 Hz) and between L and N within the range...
  • Page 218 Troubleshooting by Indication on the Remote Controller ESIE09-08A 3.55 “U2 ” Power Supply Insufficient or Instantaneous Failure Remote Control Display Subcode 20: high/low voltage problem Subcode 21: converter problem Applicable Models All indoor units Method of Detection of voltage of main circuit capacitor built in the inverter and power supply voltage. Malfunction Detection Malfunction...
  • Page 219 ESIE09-08A Troubleshooting by Indication on the Remote Controller Be sure to turn off power switch before connecting or disconnecting connector, Caution otherwise parts may be damaged. Have the power supply voltages between L1 and L2, L2 and L3, and L1 and L3 fallen within Correct the power supply the range of 380 to 415V±10% (50 Hz) and voltages.

  • Page 220: U4" Malfunction Of Transmission Between Indoor Unit And Outdoor Unit

    Troubleshooting by Indication on the Remote Controller ESIE09-08A 3.56 “U4 ” Malfunction of Transmission between Indoor Unit and Outdoor Unit Remote Control Display subcode 0 Applicable Models AII indoor unit models ER*Q 011~016* Method of Microcomputer checks if transmission between indoor and outdoor unit is normal. Malfunction Detection Malfunction...
  • Page 221 ESIE09-08A Troubleshooting by Indication on the Remote Controller Troubleshooting Be sure to turn off power switch before connecting or disconnecting Caution connector, otherwise parts may be damaged. the indoor or outdoor unit PC board been replaced, or has the indoor - outdoor unit transmission wiring been modified?

  • Page 222: U4" Malfunction Of Transmission Indoor Unit

    Troubleshooting by Indication on the Remote Controller ESIE09-08A 3.57 “U4 ” Malfunction of Transmission Indoor Unit Remote Control Display Subcode 4 Applicable Models AII indoor unit models Method of Microcomputer checks QA communication of indoor unit. Malfunction Detection Malfunction When transmission is not carried out normally for a certain amount of time Decision Conditions ...

  • Page 223: U5" Malfunction Of Transmission Between Remote Control And Indoor Unit

    ESIE09-08A Troubleshooting by Indication on the Remote Controller 3.58 “U5 ” Malfunction of Transmission between Remote Control and Indoor Unit Remote Control Display Subcode 0 Applicable Models AII indoor unit models Method of In case of controlling with 2-remote control, check the system using microcomputer is signal Malfunction transmission between indoor unit and remote (correct if faulty) control (main and sub) is normal.

  • Page 224: U7" Indoor Unit: Malfunction Of Transmission Outdoor Unit

    Troubleshooting by Indication on the Remote Controller ESIE09-08A 3.59 “U7 ” Indoor Unit: Malfunction of Transmission Outdoor Unit Remote Control Display Subcode 2 Applicable Models ER*Q 011~016* Method of Microcomputer checks the transmission of outdoor unit. Malfunction Detection Malfunction When transmission is not carried out normally for a certain amount of time Decision Conditions ...

  • Page 225: U8" Malfunction Of Transmission Between Main And Sub Remote Controls

    ESIE09-08A Troubleshooting by Indication on the Remote Controller 3.60 “U8 ” Malfunction of Transmission between Main and Sub Remote Controls Remote Control Display Applicable Models AII indoor unit models Method of In case of controlling with 2-remote control, check the system using microcomputer if signal transmission Malfunction between indoor unit and remote control (main and sub) is normal.

  • Page 226: Ua" Communication Error Between Outdoor Unit And Indoor Unit

    Troubleshooting by Indication on the Remote Controller ESIE09-08A 3.61 “UA ” Communication Error between Outdoor Unit and Indoor Unit Remote Control Display subcode 13 subcode 39 Applicable Models AII indoor unit models All outdoor unit models Method of Malfunction Detection Malfunction Decision Conditions ...

  • Page 227: Uf" System Is Not Set Yet

    ESIE09-08A Troubleshooting by Indication on the Remote Controller 3.62 “UF ” System is not Set yet Remote Control Display subcode 6: QA wiring problem. subcode 10: Transmission problem with outdoor unit. Applicable Models All models of indoor units All models of outdoor units Method of Malfunction Detection...

  • Page 228: Uh" Malfunction Of System, Refrigerant System Address Undefined

    Troubleshooting by Indication on the Remote Controller ESIE09-08A 3.63 “UH ” Malfunction of System, Refrigerant System Address Undefined Remote Control Display subcode 0 Applicable Models AII indoor unit models All outdoor unit models Method of Malfunction Detection Malfunction Decision Conditions ...
  • Page 229 ESIE09-08A Troubleshooting by Indication on the Remote Controller [CHECK 1] Check for causes of rise in high pressure Referring to the Fault Tree Analysis (FTA) shown below, probe the faulty points. Stop valve closed ←Check to be sure the stop valve is open. Local High pipe pressure...
  • Page 230 Troubleshooting by Indication on the Remote Controller ESIE09-08A [CHECK 2] Check for causes of drop in low pressure Referring to the Fault Tree Analysis (FTA) shown below, probe the faulty points. Abnormally low low-pressure [Heating] (Low evaporating (See *1.) temperature) Faulty electronic expansion valve control...
  • Page 231 ESIE09-08A Troubleshooting by Indication on the Remote Controller [CHECK 3] Check for Fan Motor Connector (1) Turn the power supply off. (2) With the fan motor connector on motor side disconnected, measure the resistance between each pin, then make sure that the resistance is more than the value mentioned in the following table. 1 White Measurement point Judgment...
  • Page 232 Troubleshooting by Indication on the Remote Controller ESIE09-08A Troubleshooting...

  • Page 233: Part 8 - Appendix

    ESIE09-08A Part 8 - Appendix 1. Piping Diagrams ..................... 224 Outdoor Unit ....................224 Indoor Unit .......................226 Switch Box Layout ..................229 2. Wiring Diagrams .................... 233 Outdoor Unit ....................233 Field Wiring Connection Diagram ..............237 Indoor Unit .......................238 3. Thermistor Resistance / Temperature Characteristics ........251 4.

  • Page 234: Piping Diagrams

    Piping Diagrams ESIE09-08A 1. Piping Diagrams Outdoor Unit ERRQ + ERSQ 011/014/016 AAV1 Appendix...
  • Page 235 ESIE09-08A Piping Diagrams ERRQ + ERSQ 011/014/016 AAY1 Appendix...

  • Page 236: Indoor Unit

    Piping Diagrams ESIE09-08A Indoor Unit EKHBRD 011~016 AAV1/Y1 Appendix...
  • Page 237 ESIE09-08A Piping Diagrams EKHBRD 011/014/016 AB/AC(V1/Y1) Appendix...
  • Page 238 Piping Diagrams ESIE09-08A Legend Part number Description Liquid thermistor R-410A Returning water thermistor Leaving water thermistor Discharge thermistor Liquid thermistor R-134a S1PH High pressure switch B1PL Low pressure sensor B1PH High pressure sensor Electronic expansion valve R-410A Electronic expansion valve R-134a E1HC Crankcase heater Four way valve...

  • Page 239: Switch Box Layout

    ESIE09-08A Piping Diagrams Switch Box Layout EKHBRD 011/014/016 AA V1 Fieldwiring to X1M Fieldwiring to X2M, A7P Fieldwiring to X3M, A8P EKHBRD 011/014/016 AB/AC V1 Appendix...
  • Page 240 Piping Diagrams ESIE09-08A Legend Part number Description Main PCB User interface PCB - remote controller Control PCB Inverter PCB QA PCB Filter PCB Digital I/O PCB Demand PCB A10P Thermostat PCB A11P Receiver PCB Capacitor Interface relay X1M-X3M Terminal strip X1Y-X3Y Connector *: included in option kit...
  • Page 241 ESIE09-08A Piping Diagrams EKHBRD 011/014/016 AAY1 Fieldwiring to X1M Fieldwiring to X2M, A7P Fieldwiring to X3M, A8P EKHBRD 011/014/016 AB/AC Y1 Appendix...
  • Page 242 Piping Diagrams ESIE09-08A Legend Part number Description Main PCB User interface PCB - remote controller Control PCB Inverter control PCB Inverter PCB Filter PCB Digital I/O PCB Demand PCB A10P Thermostat PCB A11P Receiver PCB Interface relay X1M-X3M Terminal strip X1Y-X3Y Connector *: included in option kit...

  • Page 243: Wiring Diagrams

    ESIE09-08A Wiring Diagrams 2. Wiring Diagrams Outdoor Unit ERRQ + ERSQ 011/014/016 V1 Appendix...
  • Page 244 Wiring Diagrams ESIE09-08A Legend Printed circuit board (main) Q1DI Field earth leakage breaker (300 mA) Printed circuit board (service) Resistor Printed circuit board (noise filter) Resistor BS1~BS5 Push button switch (mode, set, return, test, Thermistor (air) reset) C1~C4 Capacitor Thermistor (discharge) Dip switch Thermistor (suction 1) E1HC...
  • Page 245 ESIE09-08A Wiring Diagrams ERRQ + ERSQ 011/014/016 Y1 Appendix...
  • Page 246 Wiring Diagrams ESIE09-08A Legend Printed circuit board Motor (compressor) Printed circuit board (inv.) Motor (upper fan) Printed circuit board (noise filter) Motor (lower fan) BS1~BS5 Push button switch Power supply mode, set, return, test, reset R1, R2 Resistor C1-C3 Capacitor Thermistor (air) Dip switch Thermistor (M1C discharge)

  • Page 247: Field Wiring Connection Diagram

    ESIE09-08A Wiring Diagrams Field Wiring Connection Diagram ERRQ + ERSQ 011/014/016 A(V1)/(Y1) in combination with EKHBRD* Appendix...

  • Page 248: Indoor Unit

    Wiring Diagrams ESIE09-08A Indoor Unit EKHBRD 011/014/016 AA V1 Appendix...
  • Page 249 ESIE09-08A Wiring Diagrams Appendix...
  • Page 250 Wiring Diagrams ESIE09-08A EKHBRD 011/014/016 AB/AC V1 Appendix...
  • Page 251 ESIE09-08A Wiring Diagrams Appendix...
  • Page 252 Wiring Diagrams ESIE09-08A Legend Part number Description B1PH High pressure sensor B1PL Low pressure sensor BS1 - BS4 (A9P) Push button Capacitor C2 - C3 Filter capacitor C1 - C3 (A4P) PCB capacitor DS1 (A*P) Dipswitch Bottom plate heater (only in combination with ERRQ* outdoor unit or ERSQ* outdoor unit with option EKBPHTH16A) E1HC Crankcase heater...
  • Page 253 ESIE09-08A Wiring Diagrams Z1F - Z5F (A*P) Noise filter *: included in option kit #: field supplied Part number Description Main PCB User interface PCB Control PCB Inverter PCB QA PCB Filter PCB Digital I/O PCB Demand PCB Service PCB A10P Thermostat PCB A11P...
  • Page 254 Wiring Diagrams ESIE09-08A EKHBRD 011/014/016 AAY1 Appendix...
  • Page 255 ESIE09-08A Wiring Diagrams Appendix...
  • Page 256 Wiring Diagrams ESIE09-08A EKHBRD 011/014/016 AB/AC Y1 Appendix...
  • Page 257 ESIE09-08A Wiring Diagrams Appendix...
  • Page 258 Wiring Diagrams ESIE09-08A Legend Part number Description B1PH High pressure sensor B1PL Low pressure sensor BS1 - BS4 (A4P) Push button C1 - C2 Filter capacitor C1 - C2 (A5P) PCB capacitor DS1 (A*P) Dipswitch Bottom plate heater (only in combination with ERRQ* outdoor unit or ERSQ* outdoor unit with option EKBPHTH16A) E1HC Crankcase heater...
  • Page 259 ESIE09-08A Wiring Diagrams *: included in option kit #: field supplied Part number Description Main PCB User interface PCB Control PCB Inverter control PCB Inverter PCB Filter PCB Digital I/O PCB (optional) Demand PCB (optional) A10P Thermostat PCB (optional) A11P Receiver PCB (optional) R1H (EKRTR) Humidity sensor (optional)
  • Page 260 Wiring Diagrams ESIE09-08A Appendix...

  • Page 261: Thermistor Resistance / Temperature Characteristics

    ESIE09-08A Thermistor Resistance / Temperature Characteristics 3. Thermistor Resistance / Temperature Characteristics Indoor unit For air suction For liquid pipe For gas pipe Outdoor unit For outdoor air Outdoor unit for fin thermistor For suction pipe 1 For heat exchanger R4T, R6T For suction pipe 2 For Subcooling heat exchanger outlet...
  • Page 262 Thermistor Resistance / Temperature Characteristics ESIE09-08A Outdoor Unit Thermistors for Discharge Pipe (R2T) (k) T°C T°C T°C 640.44 624.65 72.32 70.96 13.35 13.15 609.31 594.43 69.64 68.34 12.95 12.76 579.96 565.78 67.06 65.82 12.57 12.38 552.00 538.63 64.60 63.41 12.20 12.01 525.63 512.97...
  • Page 263 ESIE09-08A Thermistor Resistance / Temperature Characteristics Tank Thermistor NTC-curve (R2T) T°C Resistance value 197.81 k 65.84 k 20 k Appendix...

  • Page 264: Pressure Sensor

    Pressure Sensor ESIE09-08A 4. Pressure Sensor = 1.38V-0.69 : Detected Pressure [High Side] MPa = 0.57V-0.28 : Detected Pressure [Low Side] MPa : High pressure (MPa) : Output Voltage [High Side] V Detected Pressure Detected Pressure : Low pressure (MPa) : Output Voltage [Low Side] V V : Voltage (V) High Pressure (P...

  • Page 265: Method Of Replacing The Inverter's Power Transistors Modules

    ESIE09-08A Method of Replacing the Inverter’s Power Transistors Modules 5. Method of Replacing the Inverter’s Power Transistors Modules Warning: CAPACITOR SHOCK HAZARD. The capacitors (top surfaces) can hold up to 220V. Use correct precautions when servicing. Checking failures in power semiconductors mounted on inverter PC board Check the power semiconductors mounted on the inverter PC board by the use of a multiple tester.
  • Page 266 Method of Replacing the Inverter’s Power Transistors Modules ESIE09-08A Inverter PC board C– Appendix...
  • Page 267 ESIE09-08A Method of Replacing the Inverter’s Power Transistors Modules Power module checking When using the digital type of multiple tester, make measurement in diode check mode. Tester terminal Criterion Remark Not less than 0.3V It may take time to (including )* determine the voltage due to capacitor charge or else.

  • Page 268: External Backup Heater Kit

    External Backup Heater Kit ESIE09-08A 6. External Backup Heater Kit Model Name Model Name EKBUHAA6V3 EKBUHAA6W1 Appendix...

  • Page 269: Main Components

    ESIE09-08A External Backup Heater Kit Main Components Bird’s-eye view Legend Name Water IN connection Heater (E*H) Water OUT connection Flow switch (S1L) Air purge Thermal fuse >122°C (F1T) Contactors (K*M) Thermal protector - manual reset >92°C (Q1L) Overcurrent fuse (F*B) Electrical connections (X*M) Thermal protector - self reset >75°C (Q2L) Flow direction...
  • Page 270 External Backup Heater Kit ESIE09-08A Safety devices Caution The heater kit air purge connection may not be used for other purposes.  Thermal protector — The heater in the heater kit is equipped with a thermal protector (activation temperature 92°C). The thermal protector is activated when the temperature becomes too high. When activated, the protector has to be reset on the heater of the heater kit by pressing the white button (for access, remove the cover of the kit).

  • Page 271: Technical Specifications

    ESIE09-08A External Backup Heater Kit Technical Specifications Heater Step 1 (kW) capacity Step 2 (kW) Dimensions H x W x D (mm) 575 x 415 x 170 Weight (kg) Connections Water inlet G 1"1/4 (male) Water outlet G 1"1/4 (female) Maximum water pressure (bar) Power supply Phase...

  • Page 272: Detailed Explanation Of Setting Modes

    External Backup Heater Kit ESIE09-08A Detailed Explanation of Setting Modes To activate the heater kit some field settings on the indoor unit need to be changed. For details how to change field settings refer to the chapter "Field settings" of the indoor unit installation or operation manual.

  • Page 273: External Backup Heater Control

    ESIE09-08A External Backup Heater Kit External Backup Heater Control Normal operation NORMAL OPERATION (BUH assistance) Note Step 0  Timer during normal operation (no BUH operation) The TM* indicate timers, these start counting down if they are crossed when going from one step over to another step.
  • Page 274 External Backup Heater Kit ESIE09-08A (*): approximate value (depends on operation conditions (e.g. dT, HP indoor unit)) Emergency EMERGENCY OPERATION operation Note Step 0 (no BUH operation) The TM* indicate timers, these start counting down if they are crossed when going from one step over to another step.

  • Page 275: Troubleshooting By Indication On The Remote Controller

    ESIE09-08A External Backup Heater Kit Troubleshooting by Indication on the Remote Controller Remote control display Subcode 0 Applicable models All indoor models Method of Malfunction detection is carried out by safety contacts in the heater kit malfunction detection Malfunction decision conditions ...

  • Page 276: Troubleshooting: General Symptoms

    External Backup Heater Kit ESIE09-08A Troubleshooting: General Symptoms General heating Possible causes Corrective action capacity shortage  BUH not operating: No symbol visible on the remote controller) (but no AA error The heater kit is not activated. Check that the “heater kit operation status” field indication) setting [6-02] is turned on (1).

  • Page 277: Switch Box Layout

    ESIE09-08A External Backup Heater Kit Switch Box Layout EKBUHAA6V3 E1H + E2H Legend Part number Description E1H, E2H Backup heater elements F1B, F2B Fuse backup heater (20A 400V) Fuse (5A T 250V) Thermal fuse backup heater Time relay (on-delay) K1M, K2M Contactor backup heater step K5M, K6M Contactor for backup heater (all pole disconnection)
  • Page 278 External Backup Heater Kit ESIE09-08A EKBUHAA6W1 E1H + E2H + E3H Legend Part number Description E1H, E2H, E3H Backup heater elements Fuse backup heater (20A 400V) Fuse (5A T 250V) Thermal fuse backup heater Time relay (on-delay) Auxilary relay K1M, K2M Contactor backup heater step Contactor for backup heater (all pole disconnection) Flowswitch...

  • Page 279: Wiring Diagrams

    ESIE09-08A External Backup Heater Kit Wiring Diagrams EKBUHAA6V3 Appendix...
  • Page 280 External Backup Heater Kit ESIE09-08A Legend Part number Description Demand PCB (Indoor unit option) E1H, E2H Backup heater elements F1B, F2B Fuse backup heater (20A 400V) Fuse (5A T 250V) Thermal fuse backup heater Time relay (on-delay) K1M, K2M Contactor backup heater step K5M, K6M Contactor for backup heater (all pole disconnection) Flowswitch...
  • Page 281 ESIE09-08A External Backup Heater Kit EKBUHAA6W1 Appendix...
  • Page 282 External Backup Heater Kit ESIE09-08A Legend Part number Description Demand PCB (Indoor unit option) E1H, E2H, E3H Backup heater elements Fuse backup heater (20A 400V) Fuse (5A T 250V) Thermal fuse backup heater Time relay (on-delay) Auxilary relay K1M, K2M Contactor backup heater step Contactor for backup heater (all pole disconnection) Flowswitch...

  • Page 283: Way Valve

    ESIE09-08A 3-Way Valve 7. 3-Way Valve Build-Up of 3-Way Valve Total assembly Legend Name Sleeve Valve motor cover Screw Turn knob Actuator assembly Appendix...

  • Page 284: Troubleshooting Overview 3-Way Valve

    3-Way Valve ESIE09-08A Troubleshooting Overview 3-Way Valve Symptom Possible cause Check Space heating circuit temperature The 3-way valve sleeve is not Verify if 3-way valve motor and rises when unit is operating in positioned correctly. body are installed correctly (see DHW.

  • Page 285: How To Verify If 3-Way Valve Is Installed Correctly

    ESIE09-08A 3-Way Valve How to Verify If 3-Way Valve is Installed Correctly Caution Switch off power before working on the unit but make sure the valve motor is not moving. Separate the 3-way valve motor from 1. Check the installed motor position. the body A.
  • Page 286 3-Way Valve ESIE09-08A Check if 3-way valve motor is 1. Check the body position by checking the groove installed correctly location of the white sleeve (the groove location indicates the closed part of the body). on to the 3-way valve body 2.
  • Page 287 ESIE09-08A 3-Way Valve Check if signal towards 3-way 1. Disconnect 3-way valve wiring from terminal In space heating mode: valve is correct X2M:2-3-4. Check with a voltmeter if the voltages on X2M:3-4-5 correspond with reference value in different operation modes. If not, replace main PCB A1P.
  • Page 288 3-Way Valve ESIE09-08A Appendix...

  • Page 289: Part 9- Precautions For New Refrigerant (R-410A)

    ESIE09-08A Part 9 - Precautions for New Refrigerant (R-410A) 1. Precautions for New Refrigerant (R-410A) ............ 272 Outline ......................272 Refrigerant Cylinders..................274 Service Tools ....................275 Precautions for New Refrigerant (R-410A)

  • Page 290: Precautions For New Refrigerant (R-410A)

    Precautions for New Refrigerant (R-410A) ESIE09-08A 1. Precautions for New Refrigerant (R-410A) Outline 1.1.1 About Refrigerant R-410A  Characteristics of new refrigerant, R-410A 1. Performance Almost the same performance as R-22 and R-407C 2. Pressure Working pressure is approx. 1.4 times more than R-22 and R-407C. 3.
  • Page 291 ESIE09-08A Precautions for New Refrigerant (R-410A)  Thermodynamic characteristic of R-410A Temperature Steam pressure Density Specific heat at constant Specific enthalpy Specific entropy (°C) (kPa) (kg/m pressure (kJ/kgK) (kJ/kg) (kJ/KgK) Liquid Vapor Liquid Vapor Liquid Vapor Liquid Vapor Liquid Vapor Precautions for New Refrigerant (R-410A)

  • Page 292: Refrigerant Cylinders

    Precautions for New Refrigerant (R-410A) ESIE09-08A Refrigerant Cylinders  Cylinder specifications  The cylinder is painted refrigerant color (pink).  The cylinder valve is equipped with a siphon tube. Cylinder Refrigerant can be charged in liquid state with cylinder in upright position.

  • Page 293: Service Tools

    ESIE09-08A Precautions for New Refrigerant (R-410A) Service Tools R-410A is used under higher working pressure, compared to previous refrigerants  (R-22,R-407C). Furthermore, the refrigerating machine oil has been changed from Suniso oil to Ether oil, and if oil mixing is occurred, sludge results in the refrigerants and causes other problems. Therefore, gauge manifolds and charge hoses that are used with a previous refrigerant (R-22,R-407C) can not be used for products that use new refrigerants.
  • Page 294 Precautions for New Refrigerant (R-410A) ESIE09-08A 1. Flaring tool Flare gauge  Specifications  Dimension A Unit:mm Tube O.D. -0.4 Nominal size Class-2 (R-410A) Class-1 (Conventional) 6.35 9.52 13.2 13.0 12.70 16.6 16.2 15.88 19.7 19.4 19.05 24.0 23.3  Differences ...
  • Page 295 ESIE09-08A Precautions for New Refrigerant (R-410A) 2. Torque wrench  Specifications  Dimension B Unit:mm Nominal size Class-1 Class-2 Previous No change in tightening torque No change in pipes of other sizes  Differences  Change of dimension B Only 1/2", 5/8" are extended For class-1: R-407C For class-2: R-410A Dimension B...
  • Page 296 Precautions for New Refrigerant (R-410A) ESIE09-08A 4. Leak tester  Specifications  Hydrogen detecting type, etc.  Applicable refrigerants R-410A, R-407C, R-404A, R-507A, R-134a, etc.  Differences  Previous testers detected chlorine. Since HFCs do not contain chlorine, new tester detects hydrogen. 5.
  • Page 297 ESIE09-08A Precautions for New Refrigerant (R-410A)  Differences  Change in pressure  Change in service port diameter 7. Charge hose for R-410A (Hose with ball valve)  Specifications  Working pressure 5.08 MPa (51.8 kg/cm  Rupture pressure 25.4 MPa (259 kg/cm ...
  • Page 298 Precautions for New Refrigerant (R-410A) ESIE09-08A TA101A (for 10-kg cylinder) = ± 2g TA101B (for 20-kg cylinder) = ± 5g  Equipped with pressure-resistant sight glass to check liquid refrigerant charging.  A manifold with separate ports for HFCs and previous refrigerants is equipped as standard accessories.
  • Page 299 ESIE09-08A Index A1 ................. 142 H9 ................. 176 A6 ................. 143 Heating Operation Prohibition ........69 A9 ................. 144 High Pressure Protection Control ........62 Abnormal Discharge Pipe Temperature ....174, 175 High Voltage of Capacitor in Main Inverter Circuit ... 201, About Refrigerant R-410A ...........
  • Page 300 ESIE09-08A Malfunction of Tank Thermistor (R3T) ....... 151 Stopping Operation ............61 Malfunction of Thermistor (R3T, R5T) for Suction Pipe 1, Switch Box Layout ..........30, 267 2 ................179 Symptom-based Troubleshooting ........ 129 Malfunction of Thermistor (R3T) Liquid Thermistor R- System is not Set yet ............
  • Page 301 ESIE09-08A Drawings & Flow Charts malfunction of tank thermistor (r3t) ......151 malfunction of thermistor (r1t) for outdoor air .... 176 abnormal discharge pipe temperature ....174, 175 malfunction of thermistor (r3t, r5t) for suction pipe 1, 2 ... actuation of high pressure switch ......157, 159 actuation of low pressure sensor ......
  • Page 302 ESIE09-08A torque wrench ............... 285 troubleshooting by remote control ........ 131 turn power on ..............79 weigher for refrigerant charge ........288 wired remote control ............87 wiring diagrams ............233 Drawings & Flow Charts...

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