Daikin ATX20JV1B Specifications

SiBE041010[Applied Models] Inverter Pair : Heat PumpInverter PairWall Mounted Type J-Series

Introduction SiBE041010ix1.2 Used IconsIcons are used to attract the attention of the reader to specific information. The meaning of each icon is desc

Check SiBE04101090 Service Diagnosis5. Check5.1 How to Check5.1.1 Electronic Expansion Valve CheckCheck No.04 Conduct the followings to check the elec

SiBE041010 CheckService Diagnosis 915.1.2 Four Way Valve Performance CheckCheck No.05(R11965)NOYESYESNOTurn off the power and turn it on again.Disconn

Check SiBE04101092 Service Diagnosis5.1.3 Thermistor Resistance CheckCheck No.06 Disconnect the connectors of the thermistors from the PCB, and measur

SiBE041010 CheckService Diagnosis 935.1.4 Installation Condition CheckCheck No.075.1.5 Discharge Pressure CheckCheck No.08Installation condition check

Check SiBE04101094 Service Diagnosis5.1.6 Outdoor Fan System CheckCheck No.09 DC motor5.1.7 Power Supply Waveforms CheckCheck No.10 Measure the power

SiBE041010 CheckService Diagnosis 955.1.8 Inverter Units Refrigerant System CheckCheck No.115.1.9 Power Module CheckCheck No.13Note: Check to make sur

Check SiBE04101096 Service Diagnosis5.1.10 Rotation Pulse Check on the Outdoor Unit PCBCheck No.15 <Outdoor fan motor>1. Check that the voltage

SiBE041010 CheckService Diagnosis 975.1.11 Indoor Unit PCB Output CheckCheck No.18 (1) Check the connector for connection.(2) Check the motor control

Check SiBE04101098 Service Diagnosis5.1.13 Fan Motor Wire / Short Circuit CheckCheck No.20 (1) Check the connector for connection.(2) Turn the power o

SiBE041010 CheckService Diagnosis 995.1.14 Main Circuit Short CheckCheck No.29Note: Check to make sure that the voltage between (+) and (–) of the dio

SiBE041010List of Functions 1Part 1List of Functions1. Functions...

SiBE041010100 Removal ProcedurePart 7Removal Procedure1. Indoor Unit...

SiBE041010 Indoor UnitRemoval Procedure 1011. Indoor Unit1.1 Removal of Air FilterProcedure Warning Be sure to wait 10 minutes or more after turning o

Indoor Unit SiBE041010102 Removal Procedure3Pull out the air filter downward and remove it.3. Remove the Titanium apatite photocatalytic air-purifying

SiBE041010 Indoor UnitRemoval Procedure 1031.2 Removal of Horizontal Blades / Fan GuardProcedure Warning Be sure to wait 10 minutes or more after turn

Indoor Unit SiBE041010104 Removal Procedure5Remove the horizontal blade.2. Remove the fan guard.1Unfasten the hooks at the lower part of the fan guard

SiBE041010 Indoor UnitRemoval Procedure 1051.3 Removal of Front PanelProcedure Warning Be sure to wait 10 minutes or more after turning off all power

Indoor Unit SiBE041010106 Removal Procedure1.4 Removal of Front GrilleProcedure Warning Be sure to wait 10 minutes or more after turning off all power

SiBE041010 Indoor UnitRemoval Procedure 1073Press each hook, and also lift the grille up to unfasten the hooks.4Pull the upper part of the front grill

Indoor Unit SiBE041010108 Removal Procedure1.5 Removal of Electrical Box / Vertical BladesProcedure Warning Be sure to wait 10 minutes or more after t

SiBE041010 Indoor UnitRemoval Procedure 1092. Remove the electrical box.1Remove the screw and disconnect the earth wire.2Disconnect the connector for

Functions SiBE0410102 List of Functions1. FunctionsCategory FunctionsFTX20/25/35JV1BRX20/25/35JV1BATX20/25/35JV1BARX20/25/35JV1BCategory FunctionsFTX2

Indoor Unit SiBE041010110 Removal ProcedureThere is a hook on the bottom frame. When reassembling, fit the rear side of the electrical box to the hoo

SiBE041010 Indoor UnitRemoval Procedure 1111.6 Removal of PCB / Swing MotorProcedure Warning Be sure to wait 10 minutes or more after turning off all

Indoor Unit SiBE041010112 Removal Procedure5Disconnect the wire harnesses from the terminal board with pliers.2. Remove the display PCB.1Lift the lowe

SiBE041010 Indoor UnitRemoval Procedure 1132Disconnect the connector [S27] from the display PCB.3The figure shows the names of the display PCB compone

Indoor Unit SiBE041010114 Removal Procedure4Unfasten the 2 hooks at the upper part from the rear side.5Lift up the upper part of the control PCB, and

SiBE041010 Indoor UnitRemoval Procedure 1151.7 Removal of Indoor Heat ExchangerProcedure Warning Be sure to wait 10 minutes or more after turning off

Indoor Unit SiBE041010116 Removal Procedure5Disconnect the flare nut for liquid piping with 2 wrenches.2. Remove the indoor unit.When the pipings are

SiBE041010 Indoor UnitRemoval Procedure 1173Widen the auxiliary piping to the extent of 10°~20°. 4Remove the screw on the left side and unfasten the h

Indoor Unit SiBE041010118 Removal Procedure1.8 Removal of Fan RotorProcedure Warning Be sure to wait 10 minutes or more after turning off all power su

SiBE041010 Indoor UnitRemoval Procedure 1192. Remove the fan rotor and fan motor.1The fan motor has 3 projections.The fan rotor has a rotating shaft o

SiBE041010Specifications 3Part 2Specifications1. Specifications ...

Indoor Unit SiBE041010120 Removal Procedure5Unfasten the 2 hooks of the motor cover.6Pull out the fan motor from the fan rotor to remove.The magnet o

SiBE041010 Indoor UnitRemoval Procedure 1211.9 Exchange of Drain HoseProcedure Warning Be sure to wait 10 minutes or more after turning off all power

Outdoor Unit SiBE041010122 Removal Procedure2. Outdoor Unit2.1 Removal of PanelsProcedure Warning Be sure to wait 10 minutes or more after turning off

SiBE041010 Outdoor UnitRemoval Procedure 1232Remove the 3 screws (right: 1 screw, left: 2 screws) and remove the top panel.3Remove the 6 screws of the

Outdoor Unit SiBE041010124 Removal Procedure2.2 Removal of Outdoor Fan / Fan MotorProcedure Warning Be sure to wait 10 minutes or more after turning o

SiBE041010 Outdoor UnitRemoval Procedure 1252.3 Removal of Electrical Box / Control PCBProcedure Warning Be sure to wait 10 minutes or more after turn

Outdoor Unit SiBE041010126 Removal Procedure5Unfasten the hook on the rear side.When reassembling, make sure to fit the hook.6Unfasten the hook, and

SiBE041010 Outdoor UnitRemoval Procedure 1273Disconnect the connector for electronic expansion valve coil [S20].4Detach the clamp of the lead wire for

Outdoor Unit SiBE041010128 Removal Procedure7Pull out the outdoor heat exchanger thermistor.Pay attention so as not to lose the clip.8Cut the clamp.9

SiBE041010 Outdoor UnitRemoval Procedure 1293. Remove the control PCB.1Remove the screw on the terminal board.2Cut the clamp.3Remove the 2 screws of t

Specifications SiBE0410104 Specifications1. Specifications50 Hz, 230 VNote: The data are based on the conditions shown in the table below.ModelIndoor

Outdoor Unit SiBE041010130 Removal Procedure5Remove the 3 screws to remove the reactor.6Disconnect the connector for thermistors [S90].7Remove the 6 s

SiBE041010 Outdoor UnitRemoval Procedure 1319Unfasten the 2 hooks.10Lift and remove the control PCB.11Feature of the control PCB[S10] [HN3] [HL3]: fil

Outdoor Unit SiBE041010132 Removal Procedure2.4 Removal of Sound BlanketProcedure Warning Be sure to wait 10 minutes or more after turning off all pow

SiBE041010 Outdoor UnitRemoval Procedure 1332Pull the sound blankets (outer and inner 2) out.3Pull the sound blanket (inner 1) out.Since the piping p

Outdoor Unit SiBE041010134 Removal Procedure2.5 Removal of Four Way ValveProcedure Warning Be sure to wait 10 minutes or more after turning off all po

SiBE041010 Outdoor UnitRemoval Procedure 1355Remove the putty.2. Remove the four way valve. CautionBe careful not to get yourself burnt with the pipes

Outdoor Unit SiBE041010136 Removal Procedure2Heat up the 3 brazed points of the four way valve. Disconnect the point (b) first.If the gas brazing mach

SiBE041010 Outdoor UnitRemoval Procedure 1372.6 Removal of CompressorProcedure Warning Be sure to wait 10 minutes or more after turning off all power

SiBE041010138 OthersPart 8Others1. Others ...1391.1 Tria

SiBE041010 OthersOthers 1391. Others1.1 Trial OperationOutline 1. Measure the supply voltage and make sure that it falls in the specified range.2. Tri

SiBE041010 SpecificationsSpecifications 550 Hz, 230 VNote: The data are based on the conditions shown in the table below.ModelIndoor Units FTX35JV1BO

Others SiBE041010140 Others1.2 Field Settings1.2.1 When 2 Units are Installed in 1 RoomHow to set the different addresses.When 2 indoor units are ins

SiBE041010 OthersOthers 1411.3 Application of Silicon Grease to a Power Transistor and a Diode BridgeApplicable ModelsAll outdoor units using inverter

SiBE041010142 AppendixPart 9Appendix1. Piping Diagrams...1431.1 Indoor

SiBE041010 Piping DiagramsAppendix 1431. Piping Diagrams1.1 Indoor UnitFTX20/25/35JV1B, ATX20/25/35JV1BREFRIGERANT FLOWHEAT EXCHANGERFIELD PIPING4.8Cu

Piping Diagrams SiBE041010144 Appendix1.2 Outdoor UnitRX20/25JV1B, ARX20/25JV1BRX35JV1B, ARX35JV1BCOOLINGCOMPRESSORHEATINGFIELD PIPING9.5CuT 9.5CuT7.0

SiBE041010 Wiring DiagramsAppendix 1452. Wiring Diagrams2.1 Indoor UnitFTX20/25/35JV1B, ATX20/25/35JV1B2.2 Outdoor UnitRX20/25/35JV1B, ARX20/25/35JV1B

WarningDaikin Industries, Ltd.’s products are manufactured for export to numerous countries throughout the world. Daikin Industries, Ltd. does not hav

Specifications SiBE0410106 Specifications50 Hz, 230 VNote: The data are based on the conditions shown in the table below.ModelIndoor Units ATX20JV1B

SiBE041010 SpecificationsSpecifications 750 Hz, 230 VNote: The data are based on the conditions shown in the table below.ModelIndoor Units ATX35JV1BO

SiBE0410108 Printed Circuit Board Connector Wiring DiagramPart 3Printed Circuit BoardConnector Wiring Diagram1. Printed Circuit Board Connector Wiring

SiBE041010 Printed Circuit Board Connector Wiring DiagramPrinted Circuit Board Connector Wiring Diagram 91. Printed Circuit Board Connector Wiring Dia

SiBE041010i Table of ContentsInverter PairWall Mounted TypeJ-SerieszHeat PumpIndoor UnitsFTX20JV1B ATX20JV1BFTX25JV1B ATX25JV1BFTX35JV1B ATX35JV1BOutd

Printed Circuit Board Connector Wiring Diagram SiBE04101010 Printed Circuit Board Connector Wiring DiagramPCB Detail PCB(1): Control PCBPCB(2): Displa

SiBE041010 Printed Circuit Board Connector Wiring DiagramPrinted Circuit Board Connector Wiring Diagram 111.2 Outdoor UnitConnectors and Other PartsPC

Printed Circuit Board Connector Wiring Diagram SiBE04101012 Printed Circuit Board Connector Wiring DiagramPCB Detail PCB(1): Filter PCBPCB(2): Main PC

SiBE041010Function and Control 13Part 4Function and Control1. Main Functions...

Main Functions SiBE04101014 Function and Control1. Main Functions1.1 Frequency PrincipleMain Control ParametersThe compressor is frequency-controlled

SiBE041010 Main FunctionsFunction and Control 15Inverter Features The inverter provides the following features:The regulating capacity can be changed

Main Functions SiBE04101016 Function and Control1.2 Airflow Direction ControlPower-Airflow FlapThe large flap sends a large volume of air downwards to

SiBE041010 Main FunctionsFunction and Control 171.3 Fan Speed Control for Indoor UnitsOutline Phase control and fan speed control contains 9 steps: LL

Main Functions SiBE04101018 Function and Control1.4 Program Dry OperationOutline Program dry operation removes humidity while preventing the room temp

SiBE041010 Main FunctionsFunction and Control 191.5 Automatic OperationOutline Automatic Cooling / Heating FunctionWhen the AUTO mode is selected with

SiBE041010Table of Contents ii1. Introduction ...v1.1 Safety

Main Functions SiBE04101020 Function and Control1.6 Thermostat ControlThermostat control is based on the difference between the room temperature and t

SiBE041010 Main FunctionsFunction and Control 211.7 NIGHT SET ModeOutline When the OFF timer is set, the NIGHT SET Mode is automatically activated. Th

Main Functions SiBE04101022 Function and Control1.8 ECONO OperationOutline The "ECONO operation" reduces the maximum operating current and p

SiBE041010 Main FunctionsFunction and Control 231.9 Inverter POWERFUL OperationOutline In order to exploit the cooling and heating capacity to full ex

Main Functions SiBE04101024 Function and Control1.10 Other Functions1.10.1 Hot-Start FunctionIn order to prevent the cold air blast that normally come

SiBE041010 Function of ThermistorFunction and Control 252. Function of ThermistorA Outdoor Heat Exchanger Thermistor 1. The outdoor heat exchanger t

Control Specification SiBE04101026 Function and Control3. Control Specification3.1 Mode HierarchyOutline There are two modes; the one is the normal op

SiBE041010 Control SpecificationFunction and Control 273.2 Frequency ControlOutline Frequency is determined according to the difference between the ro

Control Specification SiBE04101028 Function and ControlIndoor Frequency Command (∆D signal)The difference between the room temperature and the target

SiBE041010 Control SpecificationFunction and Control 293.3 Controls at Mode Changing / Start-up3.3.1 Preheating OperationOutline The inverter operatio

SiBE041010iii Table of Contents2.3 Adjusting the Airflow Direction...452.4 POWERFUL Opera

Control Specification SiBE04101030 Function and Control3.3.4 3-minute StandbyTurning on the compressor is prohibited for 3 minutes after turning it of

SiBE041010 Control SpecificationFunction and Control 313.5 Input Current ControlOutline The microcomputer calculates the input current during the comp

Control Specification SiBE04101032 Function and Control3.6 Freeze-up Protection ControlOutline During cooling operation, the signal sent from the indo

SiBE041010 Control SpecificationFunction and Control 333.8 Outdoor Fan Control1. Fan OFF delay when stoppedThe outdoor fan is turned OFF 70 seconds af

Control Specification SiBE04101034 Function and Control3.10 Defrost ControlOutline Defrosting is carried out by the cooling cycle (reverse cycle). The

SiBE041010 Control SpecificationFunction and Control 353.11 Electronic Expansion Valve ControlOutline The following items are included in the electron

Control Specification SiBE04101036 Function and Control3.11.1 Fully Closing with Power ONThe electronic expansion valve is initialized when turning on

SiBE041010 Control SpecificationFunction and Control 373.11.7 Control when frequency is changedWhen the target discharge pipe temperature control is a

Control Specification SiBE04101038 Function and Control3.12 Malfunctions3.12.1 Sensor Malfunction DetectionSensor malfunction may occur in the thermis

SiBE041010 Control SpecificationFunction and Control 393.13 Forced Operation ModeOutline Forced operation mode includes only forced cooling.DetailItem

SiBE041010Table of Contents iv2. Outdoor Unit...1222.1 Removal of

SiBE04101040 Operation ManualPart 5Operation Manual1. System Configuration...

SiBE041010 System ConfigurationOperation Manual 411. System ConfigurationAfter the installation and test operation of the room air conditioner have be

Operation Manual SiBE04101042 Operation Manual2. Operation ManualIllustrations are for FTX models as representative.2.1 Remote Controller6 Remote Con

SiBE041010 Operation ManualOperation Manual 432.2 AUTO · DRY · COOL · HEAT · FAN Operation10AUTO · DRY · COOL · HEAT · FAN Operation To start operati

Operation Manual SiBE04101044 Operation Manual11 To change the airflow rate setting5. Press “FAN setting button”.• Indoor unit quiet operationWhen th

SiBE041010 Operation ManualOperation Manual 452.3 Adjusting the Airflow Direction12Adjusting the Airflow DirectionYou can adjust the airflow direction

Operation Manual SiBE04101046 Operation Manual13 To start COMFORT AIRFLOW operation3. Press “COMFORT AIRFLOW button”.•The flap position will change,

SiBE041010 Operation ManualOperation Manual 472.4 POWERFUL Operation14POWERFUL Operation1. Press “POWERFUL button”.• POWERFUL operation ends in 20min

Operation Manual SiBE04101048 Operation Manual2.5 ECONO Operation15ECONO Operation To start ECONO operation1. Press “ECONO button” .• “ ” is disp

SiBE041010 Operation ManualOperation Manual 492.6 TIMER Operation16TIMER Operation• Check that the clock is correct.If not, set the clock to the pres

Introduction SiBE041010v1. Introduction1.1 Safety CautionsCautions and WarningsBe sure to read the following safety cautions before conducting repair

Operation Manual SiBE04101050 Operation Manual17 To use ON TIMER operation•1. Press “ON TIMER button”.is displayed.blinks.2.•3. Press “ON TIMER butto

SiBE041010Service Diagnosis 51Part 6Service Diagnosis1. Caution for Diagnosis...

Caution for Diagnosis SiBE04101052 Service Diagnosis1. Caution for Diagnosis1.1 Troubleshooting with LEDIndoor Unit The operation lamp blinks when any

SiBE041010 Problem Symptoms and MeasuresService Diagnosis 532. Problem Symptoms and MeasuresSymptom Check Item Details of Measure ReferencePageThe uni

Service Check Function SiBE04101054 Service Diagnosis3. Service Check FunctionCheck Method 1 1. When the timer cancel button is held down for 5 second

SiBE041010 Service Check FunctionService Diagnosis 55Check Method 21. Press the center of the TEMP button and the MODE button at the same time.The fig

Service Check Function SiBE04101056 Service Diagnosis5. Press the TEMP▲ or ▼ button and change the figure until you hear the sound of “beep”.6. Diagno

SiBE041010 TroubleshootingService Diagnosis 574. Troubleshooting4.1 Error Codes and Description★: Displayed only when system-down occurs.Error Codes D

Troubleshooting SiBE04101058 Service Diagnosis4.2 Indoor Unit PCB AbnormalityRemote Controller DisplayA1Method of Malfunction DetectionThe system chec

SiBE041010 TroubleshootingService Diagnosis 594.3 Freeze-up Protection Control or Heating Peak-cut ControlRemote Controller DisplayA5Method of Malfunc

SiBE041010 IntroductionviBe sure to wear a safety helmet, gloves, and a safety belt when working at a high place (more than 2 m). Insufficient safety

Troubleshooting SiBE04101060 Service DiagnosisTroubleshootingCheck No.06Refer to P.92NONONOCheck No. 06Check the indoor heat exchanger thermistor.YESY

SiBE041010 TroubleshootingService Diagnosis 614.4 Fan Motor (DC Motor) or Related AbnormalityRemote Controller DisplayA6Method of Malfunction Detectio

Troubleshooting SiBE04101062 Service DiagnosisTroubleshootingCheck No.18Refer to P.97Check No.19Refer to P.97Check No.20Refer to P.98(R12038)Turn off

SiBE041010 TroubleshootingService Diagnosis 634.5 Thermistor or Related Abnormality (Indoor Unit)Remote Controller DisplayC4, C9 Method of Malfunctio

Troubleshooting SiBE04101064 Service Diagnosis4.6 Signal Transmission Error (between Indoor and Outdoor Unit)Remote Controller DisplayU4Method of Malf

SiBE041010 TroubleshootingService Diagnosis 654.7 Unspecified Voltage (between Indoor and Outdoor Unit)Remote Controller Display UAMethod of Malfuncti

Troubleshooting SiBE04101066 Service Diagnosis4.8 Outdoor Unit PCB AbnormalityRemote Controller Display E1Method of Malfunction DetectionThe system f

SiBE041010 TroubleshootingService Diagnosis 674.9 OL Activation (Compressor Overload)Remote Controller DisplayE5Method of Malfunction DetectionA compr

Troubleshooting SiBE04101068 Service Diagnosis4.10 Compressor LockRemote Controller DisplayE6Method of Malfunction DetectionA compressor lock is detec

SiBE041010 TroubleshootingService Diagnosis 694.11 DC Fan LockRemote Controller DisplayE7Method of Malfunction DetectionAn error is determined with th

Introduction SiBE041010vii1.1.2 Cautions Regarding Safety of UsersWarningBe sure to use parts listed in the service parts list of the applicable model

Troubleshooting SiBE04101070 Service Diagnosis4.12 Input Overcurrent DetectionRemote Controller DisplayE8Method of Malfunction DetectionAn input overc

SiBE041010 TroubleshootingService Diagnosis 714.13 Four Way Valve AbnormalityRemote Controller DisplayEAMethod of Malfunction DetectionThe room temper

Troubleshooting SiBE04101072 Service DiagnosisTroubleshootingCheck No.05Refer to P.91Check No.06Refer to P.92Check No.11Refer to P.95 NGOKNOOKNGOKYESN

SiBE041010 TroubleshootingService Diagnosis 734.14 Discharge Pipe Temperature ControlRemote Controller DisplayF3Method of Malfunction DetectionAn erro

Troubleshooting SiBE04101074 Service Diagnosis4.15 High Pressure Control in CoolingRemote Controller DisplayF6Method of Malfunction DetectionHigh-pres

SiBE041010 TroubleshootingService Diagnosis 754.16 Compressor System Sensor AbnormalityRemote Controller Display H0Method of Malfunction DetectionThe

Troubleshooting SiBE04101076 Service Diagnosis4.17 Position Sensor AbnormalityRemote Controller DisplayH6Method of Malfunction DetectionA compressor s

SiBE041010 TroubleshootingService Diagnosis 77TroubleshootingCheck No.29Refer to P.99CautionBe sure to turn off the power switch before connecting or

Troubleshooting SiBE04101078 Service Diagnosis4.18 DC Voltage / Current Sensor AbnormalityRemote Controller DisplayH8Method of Malfunction DetectionDC

SiBE041010 TroubleshootingService Diagnosis 794.19 Thermistor or Related Abnormality (Outdoor Unit)Remote Controller Display H9, J3, J6, P4Method of M

SiBE041010 IntroductionviiiCheck to make sure that the power cable plug is not dirty or loose, then insert the plug into a power outlet securely.If th

Troubleshooting SiBE04101080 Service DiagnosisTroubleshooting In case of “H9” “J3” “J6”Check No.06Refer to P.92H9 : Outdoor temperature thermistorJ3 :

SiBE041010 TroubleshootingService Diagnosis 814.20 Electrical Box Temperature RiseRemote Controller DisplayL3Method of Malfunction DetectionAn electri

Troubleshooting SiBE04101082 Service DiagnosisTroubleshootingCheck No.07Refer to P.93Check No.09Refer to P.94CautionWARNINGTo cool the electrical comp

SiBE041010 TroubleshootingService Diagnosis 834.21 Radiation Fin Temperature RiseRemote Controller DisplayL4Method of Malfunction DetectionA radiation

Troubleshooting SiBE04101084 Service DiagnosisTroubleshootingCheck No.07Refer to P.93Check No.09Refer to P.94Note: Refer to “Application of silicon gr

SiBE041010 TroubleshootingService Diagnosis 854.22 Output Overcurrent DetectionRemote Controller DisplayL5Method of Malfunction DetectionAn output ove

Troubleshooting SiBE04101086 Service DiagnosisTroubleshootingCheck No.07Refer to P.93Check No.08Refer to P.93Check No.13Refer to P.95(R12016)CautionNO

SiBE041010 TroubleshootingService Diagnosis 874.23 Refrigerant ShortageRemote Controller DisplayU0Method of Malfunction DetectionRefrigerant shortage

Troubleshooting SiBE04101088 Service DiagnosisTroubleshootingCheck No.04Refer to P.90Check No.06Refer to P.92(R12015)CautionYESNGNONOYESYESYESNOYESNON

SiBE041010 TroubleshootingService Diagnosis 894.24 Low-voltage Detection or Over-voltage DetectionRemote Controller DisplayU2Method of Malfunction Det