Page 1 ESIE09-08B 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/AD V1, Y1 R-410A, R-134a EKHTS(U) 200/260 A, AB, AC EKBUHAA6 V3, W1...
Page 3: Table Of Contents
ESIE09-08B Table of Contents Table of Contents ................i 1. Introduction .................... vi 1.1 Safety Cautions ..................vi 1.2 PREFACE ....................x Part 1 - General Information ............1 1. Model Names of Indoor/Outdoor Units & Tanks ........2 Part 2 - Specifications..............4 1.
Page 4 ESIE09-08B Part 5 - Function ................45 1. Operation Mode ..................46 2. Basic Control..................47 2.1 Normal Operation ...................47 2.2 Compressor PI Control................48 2.3 Electronic Expansion Valve PI Control R-410A circuit ......49 2.4 Electronic Expansion Valve PI Control R-134a circuit......49 3. Special Control..................50 3.1 Startup Control ..................50 3.2 Defrosting Operation ................51 3.3 Pump-down Residual Operation ............52...
Page 5 ESIE09-08B 3.3 “A9” Indoor Unit: Malfunction of Moving Part of Electronic Expansion  Valve (K1E) R-410A circuit..............134 3.4 “AE” Indoor Unit: Water Circuit Error.............136 3.5 “AJ” Indoor Unit: Malfunction of Capacity Determination Device..137 3.6 “C1” Indoor Unit: Failure of Transmission (Between Indoor unit PC  Board and Control PC Board) ..............138 3.7 “C4”...
Page 6 ESIE09-08B 3.44 “L8” Indoor Unit: Inverter Current Abnormal .........185 3.45 “L9” Outdoor Unit: Inverter Start up Error ..........186 3.46 “L9” Indoor Unit: Inverter Start up Error ..........187 3.47 “LC” Outdoor Unit: Malfunction of Transmission between Inverter  and Control PC Board ................188 3.48 “LC”...
Page 7 ESIE09-08B 8. 3-Way Valve..................261 8.1 Build-Up of 3-Way Valve ..............261 8.2 Troubleshooting Overview 3-Way Valve ..........262 8.3 How to Verify If 3-Way Valve is Installed Correctly ......263 Part 9 - Precautions for New Refrigerant (R-410A) ....266 1. Precautions for New Refrigerant (R-410A) .........267 1.1 Outline ....................267 1.2 Refrigerant Cylinders................269 1.3 Service Tools..................270...
Page 8: Introduction
Introduction ESIE09-08B 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 “ Warnings Warning” items are especially important since they can lead to death or serious injury if they are not followed closely.
Page 9 ESIE09-08B 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 Introduction ESIE09-08B Warning When connecting the cable between the indoor and outdoor units, make sure that the terminal cover does not lift off or dismount because of the cable. If the cover is not mounted properly, the terminal connection section can cause an electrical shock, excessive heat generation or fire.
Page 11 ESIE09-08B Introduction Caution Check to see if the parts and wires are mounted and connected properly, and if the connections at the soldered or crimped terminals are secure. Improper installation and connections can cause excessive heat generation, fire or an electrical shock. If the installation platform or frame has corroded, replace it.
Page 12: Preface
PREFACE Thank you for your continued patronage of Daikin products. 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
ESIE09-08B 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 ESIE09-08B 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 ESIE09-08B Model Names of Indoor/Outdoor Units & Tanks Tank Model Name Version EKHTS 200 EKHTS 260 EKHTSU 200 EKHTSU 260 General Information...
Page 16: Part 2 - Specifications
ESIE09-08B Part 2 - Specifications 1. Specifications ..................5 Specifications...
Page 17: Specifications
ESIE09-08B Specifications 1. Specifications For details of the specifications, we refer tot the Databooks. Specifications...
Page 18 Specifications ESIE09-08B Specifications...
Page 19: Part 3 - Refrigerant Circuit & Functional Parts
ESIE09-08B Part 3 - Refrigerant Circuit & Functional Parts 1. Refrigerant Circuit ...................8 Outdoor Unit ...................8 Indoor Unit ..................10 2. Functional Parts Layout ................14 2.1 ERRQ 011/014/016 AAV1, ERSQ 011/014/016 AAV1 ......14 2.2 ERRQ 011/014/016 AAY1, ERSQ 011/014/016 AAY1 ......16 2.3 EKHBRD 011/014/016 AA(V1/Y1) ............18 2.4 EKHBRD 011/014/016 AB/AC(V1/Y1) ...........20 2.5 EKHBRD 011/014/016 AC/AD(V1/Y1) ...........21...
Page 20: Refrigerant Circuit
Refrigerant Circuit ESIE09-08B 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 Inverter compressor (INV) the inverter. In total there are 31 steps. Since the system is of air heat exchanging type, the fan is operated at 8 (9)-step Inverter fan rotation speed by using the inverter.
Page 21 ESIE09-08B Refrigerant Circuit Refrigerant Circuit...
Page 22: Indoor Unit
Refrigerant Circuit ESIE09-08B Indoor Unit EKHBRD 011/014/016 AA/AB(V1/Y1) No. in refrigerant Symbol Name Major Function system diagram Inverter compressor on Inverter compressor is operated on frequencies between 40 Hz and 210 Hz by using R-134a the inverter. Max. of 30 steps. Used to switch the operation mode between heating and defrost.
Page 23 ESIE09-08B Refrigerant Circuit EKHBRD 011/014/016 AA/AB(V1/Y1) Refrigerant Circuit...
Page 24 Refrigerant Circuit ESIE09-08B EKHBRD 011/014/016 AC/AD(V1/Y1) No. in refrigerant Symbol Name Major Function system diagram Inverter compressor on Inverter compressor is operated on frequencies between 40 Hz and 210 Hz by using R-134a the inverter. Max. of 30 steps. Used to switch the operation mode between heating and defrost. Not activated during Four way valve heating (opposite concerning outdoor unit).
Page 25 ESIE09-08B Refrigerant Circuit EKHBRD 011/014/016 AC/AD(V1/Y1) Refrigerant Circuit...
Page 26: Functional Parts Layout
Functional Parts Layout ESIE09-08B 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 27 ESIE09-08B Functional Parts Layout 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 28: Errq 011/014/016 Aay1, Ersq 011/014/016 Aay1
Functional Parts Layout ESIE09-08B 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 29 ESIE09-08B Functional Parts Layout Back view Subcool gas pipe thermistor Suction thermistor R1T Ambient thermistor R8T Liquid pipe thermistor Liquid pipe thermistor Refrigerant Circuit...
Page 30: Ekhbrd 011/014/016 Aa(V1/Y1)
Functional Parts Layout ESIE09-08B EKHBRD 011/014/016 AA(V1/Y1) Front view 13 12 Top view Refrigerant Circuit...
Page 31 ESIE09-08B Functional Parts Layout 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 32: Ekhbrd 011/014/016 Ab/Ac(V1/Y1)
Functional Parts Layout ESIE09-08B 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 33: Ekhbrd 011/014/016 Ac/Ad(V1/Y1)
ESIE09-08B Functional Parts Layout EKHBRD 011/014/016 AC/AD(V1/Y1) Overview 2 18 22 22 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))
Page 34: Ekhts 200/260 A/Ab/Ac
Functional Parts Layout ESIE09-08B 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 35 ESIE09-08B 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 36: Ekhtsu 200/260 A/Ab/Ac
Functional Parts Layout ESIE09-08B EKHTSU 200/260 A/AB/AC Front view Tank sensor Refrigerant Circuit...
Page 37 ESIE09-08B 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 38 Functional Parts Layout ESIE09-08B Refrigerant Circuit...
Page 39: Part 4 - Electrical Circuit
ESIE09-08B Part 4 - Electrical Circuit 1. Switch Box Layout - Indoor Unit EKHBRD..........28 2. PCB Layout for EKHBRD 011/014/016 AA/AB/AC/AD V1/Y1 ....32 2.1 Main PCB - A1P ..................32 2.2 Control - PCB - A3P ................34 2.3 Inverter PCB - A4P.................36 2.4 Filter PCB - A6P ..................38 2.5 QA PCB - A5P..................40 2.6 Inverter Control PCB - Three Phase - A4P ..........41...
Page 40: Switch Box Layout - Indoor Unit Ekhbrd
Switch Box Layout - Indoor Unit EKHBRD ESIE09-08B 1. Switch Box Layout - Indoor Unit EKHBRD EKHBRD 011/014/016 AAV1 Fieldwiring to X1M Fieldwiring to X2M, A7P Fieldwiring to X3M, A8P EKHBRD 011/014/016 AAY1 Refrigerant Circuit...
Page 41 ESIE09-08B Switch Box Layout - Indoor Unit EKHBRD Partnumber Name Main PCB Control PCB Inverter PCB Inverter control PCB (only Y1) QA PCB (only V1) Filter PCB Digital I/O PCB (Optional) Demand PCB (Optional) Terminal block: Main power supply Terminal block: AC connections Terminal block: DC connections DC connector (low voltage) Pump connector...
Page 42 Switch Box Layout - Indoor Unit EKHBRD ESIE09-08B EKHBRD 011/014/016 AB/AC/AD V1 Fieldwiring to X1M Fieldwiring to X2M, A7P Fieldwiring to X3M, A8P EKHBRD 011/014/016 AB/AC/AD Y1 Refrigerant Circuit...
Page 43 ESIE09-08B Switch Box Layout - Indoor Unit EKHBRD Partnumber Name Main PCB Control PCB Inverter PCB Inverter control PCB (only Y1) QA PCB (only V1) Filter PCB Digital I/O PCB (Optional) Demand PCB (Optional) Terminal block: Main power supply Terminal block: AC connections Terminal block: DC connections DC connector (low voltage) Pump connector...
Page 44: Pcb Layout For Ekhbrd 011/014/016 Aa/Ab/Ac/Ad V1/Y1
PCB Layout for EKHBRD 011/014/016 AA/AB/AC/AD V1/Y1 ESIE09-08B 2. PCB Layout for EKHBRD 011/014/016 AA/AB/AC/ AD V1/Y1 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...
Page 45 ESIE09-08B PCB Layout for EKHBRD 011/014/016 AA/AB/AC/AD V1/Y1 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 46: Control - Pcb - A3P
PCB Layout for EKHBRD 011/014/016 AA/AB/AC/AD V1/Y1 ESIE09-08B 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 b white X14A X15A X16A X10A Fuse...
Page 47 ESIE09-08B PCB Layout for EKHBRD 011/014/016 AA/AB/AC/AD V1/Y1 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 48: Inverter Pcb - A4P
PCB Layout for EKHBRD 011/014/016 AA/AB/AC/AD V1/Y1 ESIE09-08B Inverter PCB - A4P Inverter PCB - single phase Refrigerant Circuit...
Page 49 ESIE09-08B PCB Layout for EKHBRD 011/014/016 AA/AB/AC/AD V1/Y1 Inverter PCB X106A X107A X111A EC09008 X21A X13A X11A X12A X51A X41A X18A X17A X32A X25A X28A X77A Connector Color Connected to Function White White White X809A of PCB A5P QA PCB X11A White R6T by connector X1Y [13, 14]...
Page 50: Filter Pcb - A6P
PCB Layout for EKHBRD 011/014/016 AA/AB/AC/AD V1/Y1 ESIE09-08B Filter PCB - A6P Filter PCB - single phase Refrigerant Circuit...
Page 51 ESIE09-08B PCB Layout for EKHBRD 011/014/016 AA/AB/AC/AD V1/Y1 Filter PCB - A6P 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 6,3A 250V [fuse]...
Page 52: Qa Pcb - A5P
PCB Layout for EKHBRD 011/014/016 AA/AB/AC/AD V1/Y1 ESIE09-08B 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 Connector Color Connected to - function X801A White X2M [8 - 9] by V5C...
Page 53: Inverter Control Pcb - Three Phase - A4P
ESIE09-08B PCB Layout for EKHBRD 011/014/016 AA/AB/AC/AD V1/Y1 Inverter Control PCB - Three Phase - A4P Inverter control PCB - three phase X18A X17A X13A X11A X12A X41A X21A X25A X28A X27A X77A X803A L31A L21A N1A L11A F1U F2U Connector Color Connected to - function...
Page 54: Inverter Pcb - Three Phase - A5P
PCB Layout for EKHBRD 011/014/016 AA/AB/AC/AD V1/Y1 ESIE09-08B Inverter PCB - Three Phase - A5P Inverter PCB - three phase X104A L32A X108A X32A L12A L22A X105A X111A X142A X141A X191A X109A X107A X106A Connector Color Connected to - function L12A Reactor - phase 1 L22A...
Page 55: Digital I/O Pcb (Option Pcb A7P)
ESIE09-08B PCB Layout for EKHBRD 011/014/016 AA/AB/AC/AD V1/Y1 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 Connector Color Connected to - function White X2M [6 - 7] White X33A of main PCB (A1P) Cooling/heating ON/OFF output...
Page 56: Demand Pcb (Option Pcb A8P)
PCB Layout for EKHBRD 011/014/016 AA/AB/AC/AD V1/Y1 ESIE09-08B 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 57: Part 5 - Function
ESIE09-08B Part 5 - Function 1. Operation Mode ..................46 2. Basic Control..................47 2.1 Normal Operation ...................47 2.2 Compressor PI Control................48 2.3 Electronic Expansion Valve PI Control R-410A circuit ......49 2.4 Electronic Expansion Valve PI Control R-134a circuit......49 3. Special Control..................50 3.1 Startup Control ..................50 3.2 Defrosting Operation ................51 3.3 Pump-down Residual Operation ............52...
Page 58: Operation Mode
Operation Mode ESIE09-08B 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 •...
Page 59: Basic Control
ESIE09-08B 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 Compressor Compressor PI control temperature protection control, and compressor operating frequency upper limit control with inverter protection control.
Page 60: Compressor Pi Control
Basic Control ESIE09-08B 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 61: Electronic Expansion Valve Pi Control R-410A Circuit
ESIE09-08B 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 62: Special Control
Special Control ESIE09-08B 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 63: Defrosting Operation
ESIE09-08B 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 64: Pump-Down Residual Operation
Special Control ESIE09-08B 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 65: Stopping Operation
ESIE09-08B 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 66: Protection Control
Protection Control ESIE09-08B 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. In heating operation [R-410A] High-pressure drop Pc>3.04MPa...
Page 67 ESIE09-08B Protection Control In heating operation [R-134a] High pressure drop High pressure not limited Pc: HP pressure sensor detection value Pc<2.7MPa during - defrost Pc>2.85MPa - compressor stop High pressure limited INV upper limit frequency : 1-step down from current compressor frequency After 10 sec.
Page 68: Low Pressure Protection Control
Protection Control ESIE09-08B 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 69 ESIE09-08B 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 70: Discharge Pipe Protection Control
Protection Control ESIE09-08B 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 71: Inverter Protection Control
ESIE09-08B 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 72 Protection Control ESIE09-08B 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 Tfin 79°C • 10 sec. & •...
Page 73: Other Control
ESIE09-08B 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 74: Outline Of Control (Indoor Unit)
Outline of Control (Indoor Unit) ESIE09-08B 6. Outline of Control (Indoor Unit) 6.1 Freeze Prevention The freeze-up prevention is only active when the unit is in thermo OFF condition. Freeze-up Prevention by [Start condition] Thermo Off AND/OR*: Condition  Outdoor ambient temperature < 4°C ...
Page 75: Simultaneous Demand Of Space Heating And Domestic Water Heating
ESIE09-08B 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 76 Outline of Control (Indoor Unit) ESIE09-08B Domestic hot water lower limit temperature Domestic hot water upper limit temperature (maximum possible storage temperature) [b-03] Domestic hot water reheat minimum temperature [b-00] Domestic hot water reheat maximum temperature [b-01] Simultaneous demand ONLY space heating request 2.
Page 77 ESIE09-08B 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 78 Outline of Control (Indoor Unit) ESIE09-08B 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. The 3-way valve will switch over to domestic water heating operation.
Page 79 ESIE09-08B 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 80 Outline of Control (Indoor Unit) ESIE09-08B 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...
Page 81: Part 6 - Test Operation
ESIE09-08B Part 6 - Test Operation 1. Test Operation ..................70 1.1 Procedure and Outline ................70 1.2 Air Tight Test and Vacuum Drying ............72 1.3 Additional Refrigerant Charge ..............73 1.4 Operation when Power is Turned On .............77 2. Outdoor Unit PC Board Layout .............78 3.
Page 82: Test Operation
Test Operation ESIE09-08B 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 83 ESIE09-08B 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 84: Air Tight Test And Vacuum Drying
Test Operation ESIE09-08B 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”...
Page 85: Additional Refrigerant Charge
ESIE09-08B Test Operation pipe (if piping work is carried out during the raining season or over a long period of time, rainwater may 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).
Page 86 Test Operation ESIE09-08B 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 87 ESIE09-08B 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 88 Test Operation ESIE09-08B 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 89: Operation When Power Is Turned On
ESIE09-08B 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 90: Outdoor Unit Pc Board Layout
Outdoor Unit PC Board Layout ESIE09-08B 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 91: Field Setting
ESIE09-08B 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.
Page 92 Field Setting ESIE09-08B 1. Changes made to a field setting are only stored when the pr button is pressed. Pressing Notes : the z 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 93 ESIE09-08B 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 94 Field Setting ESIE09-08B 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 — — (OFF) Not applicable. Do not change the default —...
Page 95 ESIE09-08B 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 37~80 °C temperature Set point: leaving water minimum 25~37 °C temperature...
Page 96 Field Setting ESIE09-08B EKHBRD*AB/AC/AD 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 1 (ON) —...
Page 97 ESIE09-08B 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 Optional bottom plate heater installed 1 (ON) — — Not applicable. Do not change the default —...
Page 98 Field Setting ESIE09-08B 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 37~80 °C temperature Set point: leaving water minimum 25~37 °C temperature...
Page 99 ESIE09-08B Field Setting 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 100 Field Setting ESIE09-08B By default space heating based on temperature set point (method 1) is enabled, so only Notes : temperature shifts 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.
Page 101 ESIE09-08B Field Setting 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. When pushing the y button The schedule timer for space heating will stop (when active at that moment) and will start again at the next scheduled ON function....
Page 102 Field Setting ESIE09-08B [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 103 ESIE09-08B Field Setting [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 104 Field Setting ESIE09-08B [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 105 ESIE09-08B Field Setting [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 106 Field Setting ESIE09-08B [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 107 ESIE09-08B Field Setting [6] Option setup First Second Default code code Setting name value Range Step Unit Option setup Domestic hot water tank installed — — (OFF) Optional room thermostat installed — — (OFF) Benefit kWh power supply mode — ...
Page 108 Field Setting ESIE09-08B [7] Option setup First Second Default code code Setting name value Range Step Unit Option setup Optional bottom plate heater installed — — (OFF) Multiple set point pattern 0 (A) — — Multiple set point 1 — —...
Page 109 ESIE09-08B Field Setting [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 1 (ON) — — optional setting Emergency operation — —...
Page 110 Field Setting ESIE09-08B Before activating emergency operation, be sure to activate theat hetaer kit. The heater will Note : stay in emergency mode unit the field setting is set back to default [8-02]=0.  [8-03] Quiet mode The unit has a quiet mode functionality for which 3 levels can be selected: ...
Page 111 ESIE09-08B Field Setting [9] Automatic temperature compensation First Second Default code code Setting name value Range Step Unit Automatic temperature compensation Leaving water temperature compensation –2~2 °C value 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 112 (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 113 ESIE09-08B Field Setting [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 1 (ON) —...
Page 114 Field Setting ESIE09-08B  [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 115 ESIE09-08B Field Setting [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 37~80 °C temperature Set point: leaving water minimum 25~37 °C temperature To prevent misuse concerning leaving water temperatures, it is possible to limit the set points. ...
Page 116 Field Setting ESIE09-08B [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 117 ESIE09-08B Field Setting [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.
Page 118: Field Setting From Outdoor Unit
Field Setting ESIE09-08B 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.
Page 119 ESIE09-08B 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 120 Field Setting ESIE09-08B  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 121 ESIE09-08B 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 122 Field Setting ESIE09-08B 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 123 ESIE09-08B 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 “Setting mode 2”. circuit An automatic pump down operation which will collect all Automatic pump...
Page 124 Field Setting ESIE09-08B Setting item display C/H selection Setting condition display MODE TEST Demand Setting item noise Master Slave  Factory set  Refrigerant recovery / Refrigerant recovery /    vacuuming: OFF vacuuming mode     ...
Page 125 ESIE09-08B Field Setting c. Monitor mode LED display Setting item Data display Contents of malfunction (the Malfunction To enter the monitor mode, push the        latest) code table MODE (BS1) button when in “Setting Contents of malfunction ...
Page 126 Field Setting ESIE09-08B 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 127 ESIE09-08B 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 128 Field Setting ESIE09-08B 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 129: Part 7 - Troubleshooting
ESIE09-08B Part 7 - Troubleshooting 1. Symptom-based Troubleshooting ............119 2. Troubleshooting by Remote Control ...........121 2.1 The INSPECTION / TEST Button............121 2.2 Self-diagnosis by Wired Remote Control ..........122 2.3 Operation of the Remote Controller’s Inspection / Test Operation  Button ....................123 2.4 Remote Control Service Mode .............124 2.5 Remote Controller Self-Diagnosis Function .........126 3.
Page 130 ESIE09-08B 3.31 “J7” Outdoor Unit: Malfunction of Thermistor (R7T) for Outdoor Unit  Liquid Pipe....................172 3.32 “J9” Outdoor Unit: Malfunction of Thermistor (R4T) for Subcooling  Heat Exchanger Gas Pipe..............173 3.33 “JA” Outdoor Unit: Malfunction of High Pressure Sensor .....174 3.34 “JA”...
Page 131: Symptom-Based Troubleshooting
ESIE09-08B 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 132 Symptom-based Troubleshooting ESIE09-08B Symptom Supposed Cause Countermeasure The system <Indoor unit> These are operating sounds of Normal operation. produces Immediately after turning ON the electronic expansion valve of This sound becomes low after a sounds. the power supply, indoor unit the indoor unit.
Page 133: Troubleshooting By Remote Control
ESIE09-08B 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 134: Self-Diagnosis By Wired Remote Control
Troubleshooting by Remote Control ESIE09-08B Self-diagnosis by Wired Remote Control If operation stops due to malfunction, the remote control’s operation LED blinks, and Explanation 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 135: Operation Of The Remote Controller's Inspection / Test Operation Button
ESIE09-08B 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 136: Remote Control Service Mode
Troubleshooting by Remote Control ESIE09-08B 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 137 ESIE09-08B Troubleshooting by Remote Control Mode 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 138: Remote Controller Self-Diagnosis Function
Troubleshooting by Remote Control ESIE09-08B 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 139 ESIE09-08B 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 140 Troubleshooting by Remote Control ESIE09-08B Malfunction code indication by outdoor unit PC board <Monitor mode> 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 141 ESIE09-08B 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 142 Troubleshooting by Remote Control ESIE09-08B <Monitor mode> 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 143 ESIE09-08B 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 144: Troubleshooting By Indication On The Remote Controller
Troubleshooting by Indication on the Remote Controller ESIE09-08B 3. Troubleshooting by Indication on the Remote Controller “A1 ” Indoor Unit: PC Board Defect Remote Control Display Subcode 0 All indoor unit models Applicable Models Check data from E²PROM. Method of Malfunction Detection When data could not be correctly received from the E²PROM...
Page 145: A6" Indoor Unit: Pump Error (M1P) Or Other Water System Error
ESIE09-08B Troubleshooting by Indication on the Remote Controller “A6 ” Indoor Unit: Pump Error (M1P) or Other Water System Error Remote Control Display Subcode 0 All indoor unit models Applicable Models Detection by failure of signal for detecting number of turns to come from the pump motor. Method of Detection by failure ref.
Page 146: A9 " Indoor Unit: Malfunction Of Moving Part Of Electronic Expansion Valve (K1E) R-410A Circuit
Troubleshooting by Indication on the Remote Controller ESIE09-08B “A9 ” Indoor Unit: Malfunction of Moving Part of Electronic Expansion Valve (K1E) R-410A circuit Remote Control Display Subcode 0 All indoor and outdoor unit models Applicable Models Method of Malfunction Detection Malfunction Decision Conditions...
Page 147 ESIE09-08B 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 148: Ae" Indoor Unit: Water Circuit Error
Troubleshooting by Indication on the Remote Controller ESIE09-08B “AE” Indoor Unit: Water Circuit Error Remote Control Display Subcode 0 All indoor unit models Applicable Models Method of Malfunction Detection Malfunction Decision Conditions  Blocked waterflow or heat exchanger (waterside). Supposed ...
Page 149: Aj" Indoor Unit: Malfunction Of Capacity Determination Device
ESIE09-08B Troubleshooting by Indication on the Remote Controller “AJ ” Indoor Unit: Malfunction of Capacity Determination Device Remote Control Display Subcode 0 All indoor unit models Applicable Models Capacity is determined according to resistance of the capacity setting adapter and the memory Method of inside the IC memory on the indoor unit PC board, and whether the value is normal or abnormal Malfunction...
Page 150: C1" Indoor Unit: Failure Of Transmission (Between Indoor Unit Pc Board And Control Pc Board)
Troubleshooting by Indication on the Remote Controller ESIE09-08B “C1” Indoor Unit: Failure of Transmission (Between Indoor unit PC Board and Control PC Board) Remote Control Display Subcode 0 All indoor unit models Applicable Models Check the condition of transmission between indoor PC board (A1P) and PC board for control Method of (A3P) using computer.
Page 151 ESIE09-08B Troubleshooting by Indication on the Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occured. Caution the connector between indoor PC board (A1P) [X35A, X70A] and PC board for Connect the connector control (A3P) [X10A, X15A] accurately.
Page 152: C4" Indoor Unit: Malfunction Of Thermistor (R3T) Liquid Thermistor R-410A
Troubleshooting by Indication on the Remote Controller ESIE09-08B “C4” Indoor Unit: Malfunction of Thermistor (R3T) Liquid Thermistor R-410A Remote Control Display Subcode 0 All indoor unit models Applicable Models Malfunction detection is carried out by temperature detected by liquid thermistor. Method of Malfunction Detection...
Page 153: C5" Indoor Unit: Malfunction Of Tank Thermistor (R2T)
ESIE09-08B Troubleshooting by Indication on the Remote Controller “C5 ” Indoor Unit: Malfunction of Tank Thermistor (R2T) Remote Control Display Subcode 0 All indoor unit models Applicable Models Malfunction detection is carried out by temperature detected by tank thermistor. Method of Malfunction Detection When the tank thermistor becomes disconnected or shorted while the unit is running.
Page 154: C9" Indoor Unit: Return Water Thermistor (R4T)
Troubleshooting by Indication on the Remote Controller ESIE09-08B “C9 ” Indoor Unit: Return Water Thermistor (R4T) Remote Control Display Subcode 0 AII indoor unit models Applicable Models Malfunction detection is carried out by temperature detected by return water temperature Method of thermistor.
Page 155: Ca" Indoor Unit: Leaving Water Thermistor Error (R5T)
ESIE09-08B Troubleshooting by Indication on the Remote Controller 3.10 “CA ” Indoor Unit: Leaving Water Thermistor Error (R5T) Remote Control Display Subcode 0 AII indoor unit models Applicable Models Malfunction detection is carried out by temperature detected by leaving water temperature Method of thermistor.
Page 156: Cj" Indoor Unit: Malfunction Of Thermostat Sensor In Remote  Controller
Troubleshooting by Indication on the Remote Controller ESIE09-08B 3.11 “CJ ” Indoor Unit: Malfunction of Thermostat Sensor in Remote Controller Remote Control Display Subcode 0 AII indoor unit models Applicable Models Malfunction detection is carried out by temperature detected by remote control air temperature Method of thermistor.
Page 157: E1" Outdoor Unit: Pc Board Defect
ESIE09-08B Troubleshooting by Indication on the Remote Controller 3.12 “E1” Outdoor Unit: PC Board Defect Remote Control Display ER*Q 011~016* Applicable Related to: R-410A compressor Models Subcode 3: see next page Check data from E²PROM Method of Malfunction Detection When data could not be correctly received from the E²PROM Malfunction E²PROM: Type of nonvolatile memory.
Page 158: E1" Indoor Unit: Pc Board Defect
Troubleshooting by Indication on the Remote Controller ESIE09-08B 3.13 “E1” Indoor Unit: PC Board Defect Remote Control Display Subcode 3 All indoor units Applicable Related to: R-134a compressor Models Check data from E²PROM Method of Malfunction Detection When data could not be correctly received from the E²PROM Malfunction E²PROM: Type of nonvolatile memory.
Page 159: E3" Outdoor Unit: Actuation Of High Pressure Switch
ESIE09-08B Troubleshooting by Indication on the Remote Controller 3.14 “E3” Outdoor Unit: Actuation of High Pressure Switch Remote Control Display Subcode 1 ER*Q 011~016* Applicable Models Abnormality is detected when the contact of the high pressure protection switch opens. Method of Malfunction Detection Error is generated when the HPS activation count reaches the number specific to the operation...
Page 160 Troubleshooting by Indication on the Remote Controller ESIE09-08B Troubleshooting Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occured. Caution Check for the points shown below.  Is the stop valve open? ...
Page 161: E3" Indoor Unit: Actuation Of High Pressure Switch
ESIE09-08B Troubleshooting by Indication on the Remote Controller 3.15 “E3” Indoor Unit: Actuation of High Pressure Switch Remote Control Display Subcode 12 All indoor units Applicable Models Abnormality is detected when the contact of the high pressure protection switch opens. Method of Malfunction Detection...
Page 162 Troubleshooting by Indication on the Remote Controller ESIE09-08B Troubleshooting Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occured. Caution Check for the points shown below.  Is the stop valve open? ...
Page 163 ESIE09-08B 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 164: E4" Outdoor Unit: Actuation Of Low Pressure Sensor
Troubleshooting by Indication on the Remote Controller ESIE09-08B 3.16 “E4 ” Outdoor Unit: Actuation of Low Pressure Sensor Remote Control Display ER*Q 011~016* Applicable Models Abnormality is detected by the pressure value with the low pressure sensor. Method of Malfunction Detection Error is generated when the low pressure is dropped under specific pressure.
Page 165 ESIE09-08B Troubleshooting by Indication on the Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occured. Caution Is the stop valve Open the stop valve. open?  Mount a pressure gauge on the low-pressure service port. ...
Page 166: E4" Indoor Unit: Actuation Of Low Pressure Sensor
Troubleshooting by Indication on the Remote Controller ESIE09-08B 3.17 “E4 ” Indoor Unit: Actuation of Low Pressure Sensor Remote Control Display Subcode 6 All indoor units Applicable Models Abnormality is detected by the pressure value with the low pressure sensor. Method of Malfunction Detection...
Page 167 ESIE09-08B Troubleshooting by Indication on the Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occured. Caution Is the stop valve Open the stop valve. open?  Mount a pressure gauge on the low-pressure service port. ...
Page 168: E5" Outdoor Unit: Inverter Compressor Motor Lock
Troubleshooting by Indication on the Remote Controller ESIE09-08B 3.18 “E5 ” Outdoor Unit: Inverter Compressor Motor Lock Remote Control Display ER*Q 011~016* Applicable Models Inverter PC board takes the position signal from UVW line connected between the inverter and Method of compressor, and the malfunction is detected when any abnormality is observed in the phase- Malfunction current waveform.
Page 169: E5" Indoor Unit: Inverter Compressor Motor Lock
ESIE09-08B Troubleshooting by Indication on the Remote Controller 3.19 “E5 ” Indoor Unit: Inverter Compressor Motor Lock Remote Control Display Subcode 6 All indoor units Applicable Models Inverter PC board takes the position signal from UVW line connected between the inverter and Method of compressor, and the malfunction is detected when any abnormality is observed in the phase- Malfunction...
Page 170: E7" Malfunction Of Outdoor Unit Fan Motor
Troubleshooting by Indication on the Remote Controller ESIE09-08B 3.20 “E7” Malfunction of Outdoor Unit Fan Motor Remote Control Display ER*Q 011~016* Applicable Models Malfunction of fan motor system is detected according to the fan speed detected by hall IC Method of when the fan motor runs.
Page 171 ESIE09-08B Troubleshooting by Indication on the Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occured. Caution 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 172: E9 " Outdoor Unit: Malfunction Of Moving Part Of Electronic Expansion Valve
Troubleshooting by Indication on the Remote Controller ESIE09-08B 3.21 “E9 ” Outdoor Unit: Malfunction of Moving Part of Electronic Expansion Valve Remote Control Display ER*Q 011~016* Applicable Models Check disconnection of connector Method of Check continuity of expansion valve coil Malfunction Detection Error is generated under no common power supply when the power is on.
Page 173 ESIE09-08B 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 174: E9 " Indoor Unit: Malfunction Of Moving Part Of Electronic Expansion Valve (K2E) R-134A Circuit
Troubleshooting by Indication on the Remote Controller ESIE09-08B 3.22 “E9 ” Indoor Unit: Malfunction of Moving Part of Electronic Expansion Valve (K2E) R-134a circuit Remote Control Display Subcode 17 All indoor units Applicable Expansion valve on R-134a Models Check disconnection of connector Method of Check continuity of expansion valve coil Malfunction...
Page 175 ESIE09-08B 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 176: F3" Outdoor Unit: Abnormal Discharge Pipe Temperature
Troubleshooting by Indication on the Remote Controller ESIE09-08B 3.23 “F3 ” Outdoor Unit: Abnormal Discharge Pipe Temperature Remote Control Display ER*Q 011~016* Applicable Models Abnormality is detected according to the temperature detected by the discharge pipe Method of temperature sensor. Malfunction Detection When the discharge pipe temperature rises to an abnormally high level...
Page 177: F3" Indoor Unit: Abnormal Discharge Pipe Temperature
ESIE09-08B Troubleshooting by Indication on the Remote Controller 3.24 “F3 ” Indoor Unit: Abnormal Discharge Pipe Temperature Remote Control Display Subcode 19 All indoor units Applicable Models Abnormality is detected according to the temperature detected by the discharge pipe Method of temperature sensor.
Page 178: H9" Outdoor Unit: Malfunction Of Thermistor (R1T) For Outdoor Air
Troubleshooting by Indication on the Remote Controller ESIE09-08B 3.25 “H9 ” Outdoor Unit: Malfunction of Thermistor (R1T) for Outdoor Air Remote Control Display ER*Q 011~016* Applicable Models Malfunction is detected from the temperature detected by the outdoor air thermistor. Method of Malfunction Detection When the outside air temperature thermistor has short circuit or open circuit.
Page 179: J3" Outdoor Unit: Malfunction Of Discharge Pipe Thermistor (R2T)
ESIE09-08B Troubleshooting by Indication on the Remote Controller 3.26 “J3 ” Outdoor Unit: Malfunction of Discharge Pipe Thermistor (R2T) Remote Control Display ER*Q 011~016* Applicable Models Malfunction is detected from the temperature detected by discharge pipe temperature Method of thermistor. Malfunction Detection When a short circuit or an open circuit in the discharge pipe temperature thermistor is detected.
Page 180: J3" Indoor Unit: Malfunction Of Discharge Pipe Thermistor (R6T)
Troubleshooting by Indication on the Remote Controller ESIE09-08B 3.27 “J3 ” Indoor Unit: Malfunction of Discharge Pipe Thermistor (R6T) Remote Control Display Subcode 46 All indoor units Applicable Models Malfunction is detected from the temperature detected by discharge pipe temperature Method of thermistor.
Page 181: J5" Outdoor Unit: Malfunction Of Thermistor (R3T, R5T) For Suction  Pipe 1, 2
ESIE09-08B 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 ER*Q 011~016* Applicable Models Malfunction is detected from the temperature detected by the thermistor for suction pipe 1, 2. Method of Malfunction Detection...
Page 182: J5" Indoor Unit: Malfunction Of Thermistor (R7T) For Liquid R-134A
Troubleshooting by Indication on the Remote Controller ESIE09-08B 3.29 “J5 ” Indoor Unit: Malfunction of Thermistor (R7T) for Liquid R-134a Remote Control Display Subcode 11 All indoor units Applicable Models Malfunction is detected from the temperature detected by the thermistor for liquid pipe. Method of Malfunction Detection...
Page 183: J6" Outdoor Unit: Malfunction Of Thermistor (R6T) For Outdoor Unit
ESIE09-08B Troubleshooting by Indication on the Remote Controller 3.30 “J6 ” Outdoor Unit: Malfunction of Thermistor (R6T) for Outdoor Unit Heat Exchanger Remote Control Display ER*Q 011~016* Applicable Models Malfunction is detected from the temperature detected by the heat exchanger thermistor. Method of Malfunction Detection...
Page 184: J7 " Outdoor Unit: Malfunction Of Thermistor (R7T) For Outdoor Unit Liquid Pipe
Troubleshooting by Indication on the Remote Controller ESIE09-08B 3.31 “J7 ” Outdoor Unit: Malfunction of Thermistor (R7T) for Outdoor Unit Liquid Pipe Remote Control Display ER*Q 011~016* Applicable Models Malfunction is detected from the temperature detected by the liquid pipe thermistor. Method of Malfunction Detection...
Page 185: J9 " Outdoor Unit: Malfunction Of Thermistor (R4T) For Subcooling Heat Exchanger Gas Pipe
ESIE09-08B 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 ER*Q 011~016* Applicable Models Malfunction is detected according to the temperature detected by subcooling heat exchanger Method of gas pipe thermistor.
Page 186: Ja" Outdoor Unit: Malfunction Of High Pressure Sensor
Troubleshooting by Indication on the Remote Controller ESIE09-08B 3.33 “JA ” Outdoor Unit: Malfunction of High Pressure Sensor Remote Control Display ER*Q 011~016* Applicable Models Malfunction is detected from the pressure detected by the high pressure sensor. Method of Malfunction Detection When the high pressure sensor is short circuit or open circuit.
Page 187: Ja" Indoor Unit: Malfunction Of High Pressure Sensor
ESIE09-08B Troubleshooting by Indication on the Remote Controller 3.34 “JA ” Indoor Unit: Malfunction of High Pressure Sensor Remote Control Display Subcode 16 All indoor units Applicable Models Malfunction is detected from the pressure detected by the high pressure sensor. Method of Malfunction Detection...
Page 188: Jc" Outdoor Unit: Malfunction Of Low Pressure Sensor
Troubleshooting by Indication on the Remote Controller ESIE09-08B 3.35 “JC ” Outdoor Unit: Malfunction of Low Pressure Sensor Remote Control Display ER*Q 011~016* Applicable Models Malfunction is detected from pressure detected by low pressure sensor. Method of Malfunction Detection When the low pressure sensor is short circuit or open circuit. Malfunction Decision Conditions...
Page 189: Jc" Indoor Unit: Malfunction Of Low Pressure Sensor
ESIE09-08B Troubleshooting by Indication on the Remote Controller 3.36 “JC ” Indoor Unit: Malfunction of Low Pressure Sensor Remote Control Display Subcode 16 All indoor units Applicable Models Malfunction is detected from pressure detected by low pressure sensor. Method of Malfunction Detection When the low pressure sensor is short circuit or open circuit.
Page 190: L1" Outdoor Unit: Malfunction Of Pc Board
Troubleshooting by Indication on the Remote Controller ESIE09-08B 3.37 “L1” Outdoor Unit: Malfunction of PC Board Remote Control Display ER*Q 011~016* Applicable Models  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 Malfunction startup.
Page 191: L1" Indoor Unit: Malfunction Of Pc Board
ESIE09-08B Troubleshooting by Indication on the Remote Controller 3.38 “L1” Indoor Unit: Malfunction of PC Board Remote Control Display Subcode 30 All indoor units Applicable Models  Detect malfunctions by current value during waveform output before compressor startup. Method of ...
Page 192: L4 " Outdoor Unit: Malfunction Of Inverter Radiating Fin Temperature Rise
Troubleshooting by Indication on the Remote Controller ESIE09-08B 3.39 “L4 ” Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise Remote Control Display ER*Q 011~016* Applicable Models Fin temperature is detected by the thermistor of the radiation fin. Method of Malfunction Detection When the temperature of the inverter radiation fin increases above 83°C.
Page 193: L4 " Indoor Unit: Malfunction Of Inverter Radiating Fin Temperature Rise (R8T)
ESIE09-08B 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 All indoor units Applicable Models Fin temperature is detected by the thermistor of the radiation fin. Method of If fin temperature is too high, the compressor will slow down (capacity shortage).
Page 194: L5" Outdoor Unit: Inverter Compressor Abnormal - R-410A
Troubleshooting by Indication on the Remote Controller ESIE09-08B 3.41 “L5 ” Outdoor Unit: Inverter Compressor Abnormal -  R-410A Remote Control Display ER*Q 011~016* Applicable Models Malfunction is detected from current flowing in the power transistor. Method of Malfunction Detection When an excessive current flows in the power transistor.
Page 195: L5" Indoor Unit: Inverter Compressor Abnormal - R-134A
ESIE09-08B Troubleshooting by Indication on the Remote Controller 3.42 “L5 ” Indoor Unit: Inverter Compressor Abnormal -  R-134a Remote Control Display Subcode 13 All indoor units Applicable Models Malfunction is detected from current flowing in the power transistor. Method of Malfunction Detection When an excessive current flows in the power transistor.
Page 196: L8" Outdoor Unit: Inverter Current Abnormal
Troubleshooting by Indication on the Remote Controller ESIE09-08B 3.43 “L8 ” Outdoor Unit: Inverter Current Abnormal Remote Control Display ER*Q 011~016* Applicable Models Malfunction is detected by current flowing in the power transistor. Method of Malfunction Detection When overload in the compressor is detected. Malfunction Decision Conditions...
Page 197: L8" Indoor Unit: Inverter Current Abnormal
ESIE09-08B Troubleshooting by Indication on the Remote Controller 3.44 “L8 ” Indoor Unit: Inverter Current Abnormal Remote Control Display Subcode 10 All indoor units Applicable Models Malfunction is detected by current flowing in the power transistor. Method of Malfunction Detection When overload in the compressor is detected.
Page 198: L9" Outdoor Unit: Inverter Start Up Error
Troubleshooting by Indication on the Remote Controller ESIE09-08B 3.45 “L9 ” Outdoor Unit: Inverter Start up Error Remote Control Display ER*Q 011~016* Applicable Models Malfunction is detected from current flowing in the power transistor. Method of Malfunction Detection When overload in the compressor is detected during startup Malfunction Decision Conditions...
Page 199: L9" Indoor Unit: Inverter Start Up Error
ESIE09-08B Troubleshooting by Indication on the Remote Controller 3.46 “L9 ” Indoor Unit: Inverter Start up Error Remote Control Display Subcode 9 All indoor units Applicable Models Malfunction is detected from current flowing in the power transistor. Method of Malfunction Detection When overload in the compressor is detected during startup Malfunction...
Page 200: Lc" Outdoor Unit: Malfunction Of Transmission Between Inverter And Control Pc Board
Troubleshooting by Indication on the Remote Controller ESIE09-08B 3.47 “LC” Outdoor Unit: Malfunction of Transmission between Inverter and Control PC Board Remote Control Display ER*Q 011~016* Applicable Models Check the communication state between inverter PC board and control PC board by micro- Method of computer.
Page 201: Lc" Indoor Unit: Malfunction Of Transmission Between Inverter And Control Pc Board
ESIE09-08B 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 All indoor units Applicable Models Check the communication state between inverter PC board and control PC board by micro- Method of computer.
Page 202: Lh" Indoor Unit: Converter Error
Troubleshooting by Indication on the Remote Controller ESIE09-08B 3.49 “LH ” Indoor Unit: Converter Error Remote Control Display Subcode 2 All indoor units Applicable Models Method of Malfunction Detection Malfunction Decision Conditions  Inverter PC board problem Supposed Causes Caution: Be sure to turn off the power switch before connecting or disconnecting connector, Troubleshooting otherwise parts may be damaged.
Page 203: P1" Outdoor Unit: High Voltage Of Capacitor In Main Inverter Circuit
ESIE09-08B Troubleshooting by Indication on the Remote Controller 3.50 “P1 ” Outdoor Unit: High Voltage of Capacitor in Main Inverter Circuit Remote Control Display ER*Q 011~016* Applicable Models Malfunction is detected according to the voltage waveform of main circuit capacitor built in the Method of inverter.
Page 204: P1" Indoor Unit: High Voltage Of Capacitor In Main Inverter Circuit
Troubleshooting by Indication on the Remote Controller ESIE09-08B 3.51 “P1 ” Indoor Unit: High Voltage of Capacitor in Main Inverter Circuit Remote Control Display Subcode 6 All indoor units Applicable Models Malfunction is detected according to the voltage waveform of main circuit capacitor built in the Method of inverter.
Page 205: Pj" Indoor Unit: Faulty Combination Of Pcb
ESIE09-08B Troubleshooting by Indication on the Remote Controller 3.52 “PJ” Indoor Unit: Faulty Combination of PCB Remote Control Display Subcode 11 All indoor units Applicable Models This malfunction is detected according to communications with the inverter. Method of Malfunction Detection Make judgment according to communication data on whether or not the type of the inverter PCB Malfunction is correct.
Page 206: U0 " Low Pressure Drop Due To Refrigerant Shortage Or Electronic Expansion Valve Failure
Troubleshooting by Indication on the Remote Controller ESIE09-08B 3.53 “U0 ” Low Pressure Drop Due to Refrigerant Shortage or Electronic Expansion Valve Failure Remote Control Display ER*Q 011~016* Applicable Models Short of gas malfunction is detected by discharge pipe temperature thermistor and low pressure Method of saturation temperature.
Page 207 ESIE09-08B Troubleshooting by Indication on the Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occured. Caution pressure is 0.25 Cooling MPa or less. Out of gas, closing of stop valve or refrigerant system is clogged.
Page 208: U2" Power Supply Insufficient Or Instantaneous Failure
Troubleshooting by Indication on the Remote Controller ESIE09-08B 3.54 “U2 ” Power Supply Insufficient or Instantaneous Failure Remote Control Display ER*Q 011~016* Applicable Models Detection of voltage of main circuit capacitor built in the inverter and power supply voltage. Method of Malfunction Detection When the abnormal voltage of main circuit capacitor built in the inverter and abnormal power...
Page 209 ESIE09-08B Troubleshooting by Indication on the Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occured. 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 210: U2" Power Supply Insufficient Or Instantaneous Failure
Troubleshooting by Indication on the Remote Controller ESIE09-08B 3.55 “U2 ” Power Supply Insufficient or Instantaneous Failure Remote Control Display Subcode 20: high/low voltage problem Subcode 21: converter problem All indoor units Applicable Models Detection of voltage of main circuit capacitor built in the inverter and power supply voltage. Method of Malfunction Detection...
Page 211 ESIE09-08B Troubleshooting by Indication on the Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occured. 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 voltages.
Page 212: U4 " Malfunction Of Transmission Between Indoor Unit And Outdoor Unit
Troubleshooting by Indication on the Remote Controller ESIE09-08B 3.56 “U4 ” Malfunction of Transmission between Indoor Unit and Outdoor Unit Remote Control Display subcode 0 AII indoor unit models Applicable ER*Q 011~016* Models Microcomputer checks if transmission between indoor and outdoor unit is normal. Method of Malfunction Detection...
Page 213 ESIE09-08B Troubleshooting by Indication on the Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occured. Caution the indoor or outdoor unit PC board been replaced, or has the indoor - outdoor unit transmission wiring been modified?
Page 214: U4" Malfunction Of Transmission Indoor Unit
Troubleshooting by Indication on the Remote Controller ESIE09-08B 3.57 “U4 ” Malfunction of Transmission Indoor Unit Remote Control Display Subcode 4 AII indoor unit models Applicable Models Microcomputer checks QA communication of indoor unit. Method of Malfunction Detection When transmission is not carried out normally for a certain amount of time Malfunction Decision Conditions...
Page 215: U5" Malfunction Of Transmission Between Remote Control And Indoor Unit
ESIE09-08B Troubleshooting by Indication on the Remote Controller 3.58 “U5 ” Malfunction of Transmission between Remote Control and Indoor Unit Remote Control Display Subcode 0 AII indoor unit models Applicable Models In case of controlling with 2-remote control, check the system using microcomputer is signal Method of transmission between indoor unit and remote (correct if faulty) control (main and sub) is normal.
Page 216: U7" Indoor Unit: Malfunction Of Transmission Outdoor Unit
Troubleshooting by Indication on the Remote Controller ESIE09-08B 3.59 “U7 ” Indoor Unit: Malfunction of Transmission Outdoor Unit Remote Control Display Subcode 2 ER*Q 011~016* Applicable Models Microcomputer checks the transmission of outdoor unit. Method of Malfunction Detection When transmission is not carried out normally for a certain amount of time Malfunction Decision Conditions...
Page 217: U8 " Malfunction Of Transmission Between Main And Sub Remote Controls
ESIE09-08B Troubleshooting by Indication on the Remote Controller 3.60 “U8 ” Malfunction of Transmission between Main and Sub Remote Controls Remote Control Display AII indoor unit models Applicable Models In case of controlling with 2-remote control, check the system using microcomputer if signal Method of transmission between indoor unit and remote control (main and sub) is normal.
Page 218: Ua" Communication Error Between Outdoor Unit And Indoor Unit
Troubleshooting by Indication on the Remote Controller ESIE09-08B 3.61 “UA ” Communication Error between Outdoor Unit and Indoor Unit Remote Control Display subcode 13 subcode 39 AII indoor unit models Applicable All outdoor unit models Models Method of Malfunction Detection Malfunction Decision Conditions...
Page 219: Uf" System Is Not Set Yet
ESIE09-08B 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. All models of indoor units Applicable All models of outdoor units Models Method of Malfunction...
Page 220: Uh" Malfunction Of System, Refrigerant System Address Undefined
Troubleshooting by Indication on the Remote Controller ESIE09-08B 3.63 “UH ” Malfunction of System, Refrigerant System Address Undefined Remote Control Display subcode 0 AII indoor unit models Applicable All outdoor unit models Models Method of Malfunction Detection Malfunction Decision Conditions ...
Page 221 ESIE09-08B 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 222 Troubleshooting by Indication on the Remote Controller ESIE09-08B [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 223 ESIE09-08B 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.
Page 224 Troubleshooting by Indication on the Remote Controller ESIE09-08B Troubleshooting...
Page 225: Part 8 - Appendix
ESIE09-08B Part 8 - Appendix 1. Specifications ..................214 1.1 ESP Curves ..................214 2. Piping Diagrams .................216 2.1 Outdoor Unit ..................216 2.2 Indoor Unit ...................217 3. Wiring Diagrams .................221 3.1 Outdoor Unit ..................221 3.2 Field Wiring Connection Diagram ............225 3.3 Indoor Unit ...................231 4.
Page 226: Specifications
Specifications ESIE09-08B 1. Specifications ESP Curves EKHBRD 011/014/016 AA/AB1AC (U1/Y1) 11kW 14kW 16kW 11kW 14kW 16kW 3TW59859-6 Legend Unit ESP without 3-way valve Unit ESP including 3-way valve  Max. ESP if T = 10°C  Max. ESP if T = 5°C External static pressure (kPa) ESP [kPa] Flow (l/min)
Page 227 ESIE09-08B Specifications EKHBRD 011/014/016 AD (U1/Y1) 11kW 14kW 16kW 11kW 14kW 16kW 3DO97345 Legend Unit ESP without 3-way valve Unit ESP including 3-way valve  Max. ESP if T = 10°C  Max. ESP if T = 5°C External static pressure (kPa) ESP [kPa] Flow [l/min] Flow (l/min)
Page 228: Piping Diagrams
Piping Diagrams ESIE09-08B 2. Piping Diagrams Outdoor Unit ERRQ + ERSQ 011/014/016 AAV1 Appendix...
Page 229 ESIE09-08B Piping Diagrams ERRQ + ERSQ 011/014/016 AAY1 Appendix...
Page 230: Indoor Unit
Piping Diagrams ESIE09-08B Indoor Unit EKHBRD 011~016 AA/ABV1/Y1 Appendix...
Page 231 ESIE09-08B Piping Diagrams Legend Partnumber 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 232 Piping Diagrams ESIE09-08B EKHBRD 011/014/016 AC/AD(V1/Y1) Appendix...
Page 233: Outdoor Unit
ESIE09-08B Piping Diagrams Legend Part number Major Function Subcool calculation. Used to control and protect the water system. Used to control and protect the water system. Used to detect discharge pipe temperature, make the temperature protection control of compressor, and others. Subcool calculation.
Page 234: Wiring Diagrams
Wiring Diagrams ESIE09-08B 3. Wiring Diagrams Outdoor Unit ERRQ + ERSQ 011/014/016 V1 Appendix...
Page 235 ESIE09-08B Wiring Diagrams 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 236 Wiring Diagrams ESIE09-08B ERRQ + ERSQ 011/014/016 Y1 Appendix...
Page 237: Field Wiring Connection Diagram
ESIE09-08B Wiring Diagrams 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 238: Field Wiring Connection Diagram
Wiring Diagrams ESIE09-08B Field Wiring Connection Diagram ERRQ + ERSQ 011/014/016 A(V1)/(Y1) in combination with EKHBRD* Appendix...
Page 239: Indoor Unit
ESIE09-08B Wiring Diagrams Indoor Unit EKHBRD 011/014/016 AA V1 Appendix...
Page 240 Wiring Diagrams ESIE09-08B Appendix...
Page 241 ESIE09-08B Wiring Diagrams EKHBRD 011/014/016 AB/AC/AD V1 Appendix...
Page 242 Wiring Diagrams ESIE09-08B Appendix...
Page 243: Indoor Unit
ESIE09-08B Wiring Diagrams 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 244 Wiring Diagrams ESIE09-08B X1Y- X4Y Connector 4 way valve 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...
Page 245 ESIE09-08B Wiring Diagrams EKHBRD 011/014/016 AAY1 Appendix...
Page 246 Wiring Diagrams ESIE09-08B Appendix...
Page 247 ESIE09-08B Wiring Diagrams EKHBRD 011/014/016 AB/AC/AD Y1 Appendix...
Page 248 Wiring Diagrams ESIE09-08B Appendix...
Page 249 ESIE09-08B Wiring Diagrams 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 250 Wiring Diagrams ESIE09-08B Connector X1Y- X4Y 4 way valve Z1F - Z5F (A*P) Noise filter *: 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...
Page 251: Thermistor Resistance / Temperature Characteristics
ESIE09-08B Thermistor Resistance / Temperature Characteristics 4. 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 R6T, R4T...
Page 252 Thermistor Resistance / Temperature Characteristics ESIE09-08B 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 253 ESIE09-08B Thermistor Resistance / Temperature Characteristics NTC-curve Tank Thermistor (R2T) T°C Resistance value 197.81 k 65.84 k 20 k Appendix...
Page 254: Pressure Sensor
Pressure Sensor ESIE09-08B 5. 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 255: Method Of Replacing The Inverter's Power Transistors Modules
ESIE09-08B Method of Replacing the Inverter’s Power Transistors Modules 6. 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 256 Method of Replacing the Inverter’s Power Transistors Modules ESIE09-08B Inverter PC board C– Appendix...
Page 257 ESIE09-08B 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 258: External Backup Heater Kit
External Backup Heater Kit ESIE09-08B 7. External Backup Heater Kit Model Name Model Name EKBUHAA6V3 EKBUHAA6W1 Appendix...
Page 259: Main Components
ESIE09-08B 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 260 External Backup Heater Kit ESIE09-08B Safety devices The heater kit air purge connection may not be used for other purposes. Caution  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.
Page 261: Technical Specifications
ESIE09-08B 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...
Page 262: Detailed Explanation Of Setting Modes
External Backup Heater Kit ESIE09-08B 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 263: External Backup Heater Control
ESIE09-08B External Backup Heater Kit External Backup Heater Control Normal operation NORMAL OPERATION Note (BUH assistance) 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 264 External Backup Heater Kit ESIE09-08B Emergency operation EMERGENCY 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. TM1: 5 minutes Step 1 Step 2 Step 0 ->...
Page 265: Troubleshooting By Indication On The Remote Controller
ESIE09-08B External Backup Heater Kit Troubleshooting by Indication on the Remote Controller Remote control display Subcode 0 All indoor models Applicable models Malfunction detection is carried out by safety contacts in the heater kit Method of malfunction detection Malfunction decision conditions ...
Page 266: Troubleshooting: General Symptoms
External Backup Heater Kit ESIE09-08B 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 267: Switch Box Layout
ESIE09-08B 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 268 External Backup Heater Kit ESIE09-08B 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 269: Wiring Diagrams
ESIE09-08B External Backup Heater Kit Wiring Diagrams EKBUHAA6V3 Appendix...
Page 270 External Backup Heater Kit ESIE09-08B 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 271 ESIE09-08B External Backup Heater Kit EKBUHAA6W1 Appendix...
Page 272 External Backup Heater Kit ESIE09-08B 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 273: Way Valve
ESIE09-08B 3-Way Valve 8. 3-Way Valve Build-Up of 3-Way Valve Total assembly Legend Name Sleeve Valve motor cover Screw Turn knob Actuator assembly Appendix...
Page 274: Troubleshooting Overview 3-Way Valve
3-Way Valve ESIE09-08B Troubleshooting Overview 3-Way Valve Symptom Possible cause Check Space heating circuit The 3-way valve sleeve is not Verify if 3-way valve motor and temperature rises when unit is positioned correctly. body are installed correctly (see operating in DHW. page 264).
Page 275: How To Verify If 3-Way Valve Is Installed Correctly
ESIE09-08B 3-Way Valve How to Verify If 3-Way Valve is Installed Correctly Switch off power before working on the unit but make sure the valve motor is not moving. Caution Separate the 3-way valve 1. Check the installed motor position. A.
Page 276 3-Way Valve ESIE09-08B Check if 3-way valve motor is 1. Check the body position by checking the groove location of the white sleeve (the groove installed location indicates the closed part of the body). correctly on to the 3-way valve body 2.
Page 277 ESIE09-08B 3-Way Valve Check if signal towards 3-way 1. Disconnect 3-way valve wiring from terminal In space heating mode: X2M:2-3-4. Check with a voltmeter if the valve is correct voltages on X2M:3-4-5 correspond with reference value in different operation modes. If not, replace main PCB A1P.
Page 278: Part 9 - Precautions For New Refrigerant (R-410A)
ESIE09-08B Part 9 - Precautions for New Refrigerant (R-410A) 1. Precautions for New Refrigerant (R-410A) .........267 1.1 Outline ....................267 1.2 Refrigerant Cylinders................269 1.3 Service Tools..................270 Precautions for New Refrigerant (R-410A)
Page 279: Precautions For New Refrigerant (R-410A)
ESIE09-08B Precautions for New Refrigerant (R-410A) 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 280 Precautions for New Refrigerant (R-410A) ESIE09-08B  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 281: Refrigerant Cylinders
ESIE09-08B Precautions for New Refrigerant (R-410A) 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 282: Service Tools
Precautions for New Refrigerant (R-410A) ESIE09-08B 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.
Page 283 ESIE09-08B Precautions for New Refrigerant (R-410A) 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 284 Precautions for New Refrigerant (R-410A) ESIE09-08B 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 285 ESIE09-08B Precautions for New Refrigerant (R-410A) 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.
Page 286 Precautions for New Refrigerant (R-410A) ESIE09-08B  Temperature scale indicates the relationship between pressure and temperature in gas saturated state.  Differences  Change in pressure  Change in service port diameter 7. Charge hose for R-410A (Hose with ball valve) ...
Page 287 ESIE09-08B Precautions for New Refrigerant (R-410A) 9. Weigher for refrigerant charge  Specifications  High accuracy TA101A (for 10-kg cylinder) = ± 2g TA101B (for 20-kg cylinder) = ± 5g  Equipped with pressure-resistant sight glass to check liquid refrigerant charging. ...
Page 288 Precautions for New Refrigerant (R-410A) ESIE09-08B Precautions for New Refrigerant (R-410A)
Page 289: Index
ESIE09-08B Index A1 .................132 H9 ................ 166 A6 .................133 Heating Operation Prohibition ....... 61 A9 .................134 High Pressure Protection Control ......54 High Voltage of Capacitor in Main Inverter  Abnormal Discharge Pipe Temperature ..164, 165 About Refrigerant R-410A ........267 Circuit ...........
Page 290 ESIE09-08B Malfunction of System, Refrigerant System Address Undefined ............208 Service Tools ............270 Malfunction of Tank Thermistor (R3T) ....141 Setting Modes ............. 250 Malfunction of Thermistor (R3T, R5T) for Suction  Setting of Refrigerant Additional Charging  Pipe 1, 2 ............169 Operation .............
Page 291 ESIE09-08B Drawings & Flow Charts malfunction of system, refrigerant system address  undefined ............. 208 abnormal discharge pipe temperature ..164, 165 malfunction of tank thermistor (r3t) ...... 141 actuation of high pressure switch ....147, 149 malfunction of thermistor (r1t) for outdoor air ..166 actuation of low pressure sensor ....152, 154 malfunction of thermistor (r3t, r5t) for suction ...
Page 292 ESIE09-08B self-diagnosis by wired remote control ....122 setting ..............81 setting of refrigerant additional charging  operation ............115 setting of refrigerant recovery mode ....115 special ..............50 switch box layout ............28 system is not set yet ..........207 torque wrench ............272 troubleshooting by remote control ......121 turn power on ............71 weigher for refrigerant charge ......275 wired remote control ..........79...

Daikin ALTHERMA HT Service Manual

Part 1 - General Information

Part 2 - Specifications

Part 3 - Refrigerant Circuit & Functional Parts

Part 4 - Electrical Circuit

Part 5 - Function

Part 6 - Test Operation

Part 7 - Troubleshooting

Part 8 - Appendix

Part 9 - Precautions for New Refrigerant (R-410A)

Index

Quick Links

Troubleshooting

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Summary of Contents for Daikin ALTHERMA HT