Daikin FLXS35BAVMB9 Service Manual

Service ManualInverter PairFloor / Ceiling Suspended Dual TypeBA-SeriesSiBE05-722ED[Applied Models]● Inverter Pair : Cooling Only● Inverter Pair : Hea

Safety Cautions SiBE05-722EDixCheck to see if the parts and wires are mounted and connected properly, and if the connections at the soldered or crimpe

Troubleshooting SiBE05-722ED89 Service Diagnosis4.21 Thermistor or Related Abnormality (Outdoor Unit)Error CodeH9, J3, J6, P4Method of Error Detection

SiBE05-722ED TroubleshootingService Diagnosis 90TroubleshootingIn case of RK(X)S25/35E2V1BIn case of H9, J3, J6 for RK(X)S25/35G2V1B, RK(X)S25/35G2V

Troubleshooting SiBE05-722ED91 Service Diagnosis4.22 Electrical Box Temperature RiseError CodeL3Method of Error DetectionAn electrical box temperature

SiBE05-722ED TroubleshootingService Diagnosis 92Troubleshooting RK(X)S25/35E2V1BCheck No.01Refer to P.99Check No.17Refer to P.105Check No.19Refer to P

Troubleshooting SiBE05-722ED93 Service DiagnosisTroubleshooting RK(X)S25/35G2V1B, RK(X)S25/35G2V1B9, RXS25/35J2V1B, RXS25K3V1B, RXS35K2V1B, RXS35L2V1B

SiBE05-722ED TroubleshootingService Diagnosis 944.23 Radiation Fin Temperature RiseError CodeL4Method of Error DetectionA radiation fin temperature ri

Troubleshooting SiBE05-722ED95 Service DiagnosisTroubleshooting RK(X)S25/35E2V1BCheck No.01Refer to P.99Check No.17Refer to P.105Check No.19Refer to P

SiBE05-722ED TroubleshootingService Diagnosis 96Troubleshooting RK(X)S25/35G2V1B, RK(X)S25/35G2V1B9, RXS25/35J2V1B, RXS25K3V1B, RXS35K2V1B, RXS35L2V1B

Troubleshooting SiBE05-722ED97 Service Diagnosis4.24 Output Overcurrent DetectionError CodeL5Method of Error DetectionAn output overcurrent is detecte

SiBE05-722ED TroubleshootingService Diagnosis 98TroubleshootingCheck No.15Refer to P.103Check No.17Refer to P.105Check No.18Refer to P.106Check No.22R

SiBE05-722ED Used Iconsx2. Used IconsThe following icons are used to attract the attention of the reader to specific information.Icon Type of Informat

Check SiBE05-722ED99 Service Diagnosis5. Check5.1 Thermistor Resistance CheckCheck No.01 Disconnect the connectors of the thermistors from the PCB, an

SiBE05-722ED CheckService Diagnosis 1005.2 Hall IC CheckCheck No.04 1. Check the connector connection.2. With the power on, operation off, and the con

Check SiBE05-722ED101 Service Diagnosis5.4 Electronic Expansion Valve CheckCheck No.12 Conduct the followings to check the electronic expansion valve

SiBE05-722ED CheckService Diagnosis 1025.5 Four Way Valve Performance CheckCheck No.135.6 Inverter Unit Refrigerant System CheckCheck No.14(R15737)NOY

Check SiBE05-722ED103 Service Diagnosis5.7 Inverter Analyzer CheckCheck No.15CharacteristicsInverter analyzer: RSUK0917CIf an abnormal stop occurs du

SiBE05-722ED CheckService Diagnosis 104Diagnose method (Diagnose according to 6 LEDs lighting status.)(1) If all the LEDs are lit uniformly, the comp

Check SiBE05-722ED105 Service DiagnosisRK(X)S25/35G2V1B9, RXS25/35J2V1B, RXS25K3V1B, RXS35K2V1B, RXS35L2V1B1. Check that the voltage between the pins

SiBE05-722ED CheckService Diagnosis 1065.10 Discharge Pressure CheckCheck No.185.11 Outdoor Fan System CheckCheck No.19 DC motor(R19385)YESYESYESNONON

Check SiBE05-722ED107 Service Diagnosis5.12 Main Circuit Short CheckCheck No.20Note: Check to make sure that the voltage between (+) and (–) of the di

SiBE05-722ED CheckService Diagnosis 108RK(X)S25/35G2V1BRK(X)S25/35G2V1B9, RXS25/35J2V1B, RXS25K3V1B, RXS35K2V1B, RXS35L2V1B(R19665)+~~–4321–+Multimete

SiBE05-722ED1 List of FunctionsPart 1List of Functions1. Functions...

Check SiBE05-722ED109 Service Diagnosis5.13 Power Module CheckCheck No.22Note: Check to make sure that the voltage between (+) and (–) of the power mo

SiBE05-722ED CheckService Diagnosis 110RK(X)S25/35G2V1BRK(X)S25/35G2V1B9, RXS25/35J2V1B, RXS25K3V1B, RXS35K2V1B, RXS35L2V1B(R19946)Diode bridge(R19947

SiBE05-722ED111 Trial Operation and Field SettingsPart 7Trial Operation andField Settings1. Pump Down Operation...

SiBE05-722ED Pump Down OperationTrial Operation and Field Settings 1121. Pump Down OperationOutline In order to protect the environment, be sure to co

Forced Cooling Operation SiBE05-722ED113 Trial Operation and Field Settings2. Forced Cooling OperationIndoor UnitOutdoor Unit: RK(X)S25/35E2V1B, RK(X)

SiBE05-722ED Trial OperationTrial Operation and Field Settings 1143. Trial OperationOutline Carry out the trial operation in accordance with the opera

Field Settings SiBE05-722ED115 Trial Operation and Field Settings4. Field Settings4.1 When 2 Units are Installed in 1 RoomOutline When 2 indoor units

SiBE05-722ED Field SettingsTrial Operation and Field Settings 1164.2 Facility Setting Jumper (cooling at low outdoor temperature)Outline This function

Field Settings SiBE05-722ED117 Trial Operation and Field Settings4.3 Jumper and Switch SettingsJumperCaution Replace the PCB if you accidentally cut a

SiBE05-722ED Silicon Grease on Power Transistor / Diode BridgeTrial Operation and Field Settings 1185. Silicon Grease on Power Transistor / Diode Brid

SiBE05-722ED FunctionsList of Functions 21. FunctionsCategory FunctionsFLKS25/35BAVMBRKS25/35E2V1BFLXS25/35BAVMBRXS25/35E2V1BCategory FunctionsFLKS25/

SiBE05-722ED119 AppendixPart 8Appendix1. Piping Diagrams...1201.1 Indoo

SiBE05-722ED Piping DiagramsAppendix 1201. Piping Diagrams1.1 Indoor Unit FLKS25/35BAVMB FLXS25/35BAVMB, FLXS35BAVMB9REFRIGERANT FLOW COOLI

Piping Diagrams SiBE05-722ED121 Appendix1.2 Outdoor Unit1.2.1 Cooling OnlyRKS25/35E2V1BRKS25/35G2V1B, RKS25/35G2V1B9M9.5CuTMUFFLER9.5CuTFIELD PIPINGFI

SiBE05-722ED Piping DiagramsAppendix 1221.2.2 Heat PumpRXS25/35E2V1BRXS25/35G2V1B, RXS25/35G2V1B9, RXS25/35J2V1B, RXS25K3V1B, RXS35K2V1B, RXS35L2V1BOU

Wiring Diagrams SiBE05-722ED123 Appendix2. Wiring Diagrams2.1 Indoor UnitFLK(X)S25/35BAVMB, FLXS35BAVMB92.2 Outdoor UnitRK(X)S25/35E2V1BPCB2PCB1PCB3S3

SiBE05-722ED Wiring DiagramsAppendix 124RK(X)S25/35G2V1BRK(X)S25/35G2V1B9, RXS25/35J2V1B, RXS25K3V1B, RXS35K2V1B, RXS35L2V1BFIELD WIRING.MRM20N=1ORGIP

Revision HistoryMonth / Year Version Revised contents01 / 2007 SiBE05-722 First edition05 / 2010 SiBE05-722_A Model addition: RK(X)S25/35G2V1B, RK(X)S

Head Office:Umeda Center Bldg., 2-4-12, Nakazaki-Nishi,Kita-ku, Osaka, 530-8323 JapanTokyo Office:JR Shinagawa East Bldg., 2-18-1, Konan,Minato-ku, To

Functions SiBE05-722ED3 List of FunctionsCategory FunctionsFLKS25/35BAVMBRKS25/35G2V1BFLXS25/35BAVMBRXS25/35G2V1BCategory FunctionsFLKS25/35BAVMBRKS25

SiBE05-722ED FunctionsList of Functions 4Category FunctionsFLKS25/35BAVMBRKS25/35G2V1B9FLXS25/35BAVMBRXS25/35G2V1B9Category FunctionsFLKS25/35BAVMBRKS

Functions SiBE05-722ED5 List of FunctionsCategory FunctionsFLXS25/35BAVMBRXS25/35J2V1BFLXS25/35BAVMBRXS25K3V1BRXS35K2V1BCategory FunctionsFLXS25/35BAV

SiBE05-722ED FunctionsList of Functions 6Category FunctionsFLXS35BAVMB9RXS35L2V1BCategory FunctionsFLXS35BAVMB9RXS35L2V1BBasic FunctionInverter (with

SiBE05-722ED7 SpecificationsPart 2Specifications1. Specifications ...

SiBE05-722ED SpecificationsSpecifications 81. Specifications1.1 Cooling Only50 Hz, 220 - 230 - 240 VNote: The data are based on the conditions shown

SiBE05-722EDi Table of ContentsInverter PairFloor / Ceiling SuspendedDual TypeBA-SerieszCooling OnlyIndoor UnitFLKS25BAVMBFLKS35BAVMBOutdoor UnitRKS25

Specifications SiBE05-722ED9 Specifications50 Hz, 220 - 230 - 240 VNote: The data are based on the conditions shown in the table below.ModelIndoor Un

SiBE05-722ED SpecificationsSpecifications 1050 Hz, 220 - 230 - 240 VNote: The data are based on the conditions shown in the table below.ModelIndoor U

Specifications SiBE05-722ED11 Specifications1.2 Heat Pump50 Hz, 220 - 230 - 240 VNote: The data are based on the conditions shown in the table below.

SiBE05-722ED SpecificationsSpecifications 1250 Hz, 220 - 230 - 240 VNote: The data are based on the conditions shown in the table below.ModelIndoor U

Specifications SiBE05-722ED13 Specifications50 Hz, 220 - 230 - 240 VNote: The data are based on the conditions shown in the table below.ModelIndoor U

SiBE05-722ED SpecificationsSpecifications 1450 Hz, 220 - 230 - 240 VNote: The data are based on the conditions shown in the table below.ModelIndoor U

Specifications SiBE05-722ED15 Specifications50 Hz, 220 - 230 - 240 VNote: The data are based on the conditions shown in the table below.ModelIndoor U

SiBE05-722ED SpecificationsSpecifications 1650 Hz, 220 - 230 - 240 VNote: The data are based on the conditions shown in the table below.ModelIndoor U

SiBE05-722ED17 Printed Circuit Board Connector Wiring DiagramPart 3Printed Circuit BoardConnector Wiring Diagram1. Indoor Unit...

SiBE05-722ED Indoor UnitPrinted Circuit Board Connector Wiring Diagram 181. Indoor UnitControl PCB (PCB1)Caution Replace the PCB if you accidentally c

SiBE05-722EDTable of Contents ii1. Safety Cautions...v1.1 Warnings

Indoor Unit SiBE05-722ED19 Printed Circuit Board Connector Wiring DiagramPower Supply PCB (PCB2)Display PCB (PCB3)Signal Receiver PCB (PCB4)1) S36 Con

SiBE05-722ED Outdoor UnitPrinted Circuit Board Connector Wiring Diagram 202. Outdoor Unit2.1 RK(X)S25/35E2V1BMain PCB (PCB2)Caution Replace the PCB if

Outdoor Unit SiBE05-722ED21 Printed Circuit Board Connector Wiring DiagramFilter PCB (PCB1)1) S11 Connector for main PCB2) HL1, HN1, S Connector for t

SiBE05-722ED Outdoor UnitPrinted Circuit Board Connector Wiring Diagram 222.2 RK(X)S25/35G2V1BMain PCB (PCB2)Caution Replace the PCB if you accidental

Outdoor Unit SiBE05-722ED23 Printed Circuit Board Connector Wiring DiagramFilter PCB (PCB1)1) S11 Connector for main PCB2) HL1, HN1, S Connector for t

SiBE05-722ED Outdoor UnitPrinted Circuit Board Connector Wiring Diagram 242.3 RK(X)S25/35G2V1B9, RXS25/35J2V1B, RXS25K3V1B, RXS35K2V1B, RXS35L2V1BMain

Outdoor Unit SiBE05-722ED25 Printed Circuit Board Connector Wiring DiagramFilter PCB (PCB1)Forced Operation Button PCB (PCB3)1) S11 Connector for main

SiBE05-722EDFunction and Control 26Part 4Function and Control1. Main Functions...

Main Functions SiBE05-722ED27 Function and Control1. Main Functions1.1 Temperature ControlDefinitions of TemperaturesThe definitions of temperatures a

SiBE05-722ED Main FunctionsFunction and Control 28Drawing of InverterThe following drawing shows a schematic view of the inverter principle:Inverter F

SiBE05-722EDiii Table of Contents3.11 Electronic Expansion Valve Control ...493.12 Malfunctions ..

Main Functions SiBE05-722ED29 Function and Control1.3 Airflow Direction ControlAuto-Swing The following table explains the auto-swing process for cool

SiBE05-722ED Main FunctionsFunction and Control 301.5 Program Dry OperationOutline Program dry operation removes humidity while preventing the room te

Main Functions SiBE05-722ED31 Function and Control1.6 Automatic OperationOutline Automatic Cooling / Heating FunctionWhen the automatic operation is s

SiBE05-722ED Main FunctionsFunction and Control 321.7 Thermostat ControlOutline Thermostat control is based on the difference between the room thermis

Main Functions SiBE05-722ED33 Function and Control1.8 NIGHT SET ModeOutline When the OFF TIMER is set, NIGHT SET Mode is automatically activated. NIGH

SiBE05-722ED Main FunctionsFunction and Control 341.9 HOME LEAVE OperationOutline HOME LEAVE operation is a function that allows you to record your pr

Main Functions SiBE05-722ED35 Function and ControlSetting Temperature and Airflow RateWhen using HOME LEAVE operation for the first time, set your pre

SiBE05-722ED Main FunctionsFunction and Control 361.11 Clock SettingARC433 Series The clock can be set by taking the following steps:1. Press the CLOC

Main Functions SiBE05-722ED37 Function and Control1.12 Other Functions1.12.1 Hot-Start FunctionIn order to prevent the cold air blast that normally oc

SiBE05-722ED Function of ThermistorFunction and Control 382. Function of Thermistor(1) Outdoor Heat Exchanger Thermistor 1. The outdoor heat exchang

SiBE05-722EDTable of Contents iv5.13 Power Module Check ...109Part 7 Trial Ope

Control Specification SiBE05-722ED39 Function and Control3. Control Specification3.1 Mode HierarchyOutline The air conditioner control has normal oper

SiBE05-722ED Control SpecificationFunction and Control 403.2 Frequency ControlOutline The compressor frequency is determined according to the differen

Control Specification SiBE05-722ED41 Function and Control3. Determine lower limit frequencyThe maximum value is set as a lower limit frequency among

SiBE05-722ED Control SpecificationFunction and Control 423.3 Controls at Mode Changing / Start-up3.3.1 Preheating ControlOutline The inverter operatio

Control Specification SiBE05-722ED43 Function and Control3.3.3 Four Way Valve Operation CompensationOutline At the beginning of operation as the four

SiBE05-722ED Control SpecificationFunction and Control 443.4 Discharge Pipe Temperature ControlOutline The discharge pipe temperature is used as the i

Control Specification SiBE05-722ED45 Function and Control3.5 Input Current ControlOutline The microcomputer calculates the input current while the com

SiBE05-722ED Control SpecificationFunction and Control 463.6 Freeze-up Protection ControlDuring cooling operation, the signal sent from the indoor uni

Control Specification SiBE05-722ED47 Function and Control3.8 Outdoor Fan Control1. Fan ON control to cool down the electrical boxThe outdoor fan is tu

SiBE05-722ED Control SpecificationFunction and Control 483.10 Defrost ControlOutline Defrosting is carried out by the cooling cycle (reverse cycle). T

Safety Cautions SiBE05-722EDv1. Safety CautionsBe sure to read the following safety cautions before conducting repair work.After the repair work is co

Control Specification SiBE05-722ED49 Function and Control3.11 Electronic Expansion Valve ControlOutline The following items are included in the electr

SiBE05-722ED Control SpecificationFunction and Control 503.11.1 Fully Closing with Power ONThe electronic expansion valve is initialized when turning

Control Specification SiBE05-722ED51 Function and Control3.11.7 Discharge Pipe Thermistor Disconnection ControlOutline The disconnection of the discha

SiBE05-722ED Control SpecificationFunction and Control 523.12 Malfunctions3.12.1 Sensor Malfunction DetectionSensor malfunction can be detected in the

SiBE05-722ED53 Remote ControllerPart 5Remote Controller1. Remote Controller ...

SiBE05-722ED Remote ControllerRemote Controller 541. Remote ControllerReference Refer to the following pages for detail.Note: Refer to the operation m

Remote Controller SiBE05-722ED55 Remote ControllerOpen the Front CoverReference Refer to the following pages for detail.Note: Refer to the operation m

SiBE05-722EDService Diagnosis 56Part 6Service Diagnosis1. General Problem Symptoms and Check Items ...572. Troublesh

General Problem Symptoms and Check Items SiBE05-722ED57 Service Diagnosis1. General Problem Symptoms and Check ItemsSymptom Check Item Details Referen

SiBE05-722ED Troubleshooting with LEDService Diagnosis 582. Troubleshooting with LED2.1 Indoor UnitOperation Lamp The operation lamp blinks when any o

SiBE05-722ED Safety CautionsviDo not start or stop the air conditioner operation by plugging or unplugging the power cable plug.Plugging or unplugging

Service Diagnosis SiBE05-722ED59 Service Diagnosis3. Service DiagnosisMethod 1 1. When the timer cancel button is held down for 5 seconds, 00 is displ

SiBE05-722ED Service DiagnosisService Diagnosis 60Method 2 1. Press the center of the TEMP button and the MODE button at the same time to enter the di

Service Diagnosis SiBE05-722ED61 Service Diagnosis5. Press the TEMP ▲ or TEMP ▼ button and change the number until you hear the long beep.6. Diagnose

SiBE05-722ED TroubleshootingService Diagnosis 624. Troubleshooting4.1 Error Codes and Description★: Displayed only when system-down occurs.Error Codes

Troubleshooting SiBE05-722ED63 Service Diagnosis4.2 Indoor Unit PCB AbnormalityError CodeA1Method of Error DetectionThe system checks if the circuit w

SiBE05-722ED TroubleshootingService Diagnosis 644.3 Freeze-up Protection Control / Heating Peak-cut ControlError CodeA5Method of Error DetectionFreez

Troubleshooting SiBE05-722ED65 Service Diagnosis4.4 Fan Motor (AC Motor) or Related AbnormalityError CodeA6Method of Error DetectionThe rotation speed

SiBE05-722ED TroubleshootingService Diagnosis 66TroubleshootingCheck No.04Refer to P.100NONONOCheck No. 04Check Hall ICNONOYESYESNOYESYESYESYES(R19372

Troubleshooting SiBE05-722ED67 Service Diagnosis4.5 Thermistor or Related Abnormality (Indoor Unit)Error CodeC4, C9Method of Error DetectionThe tempe

SiBE05-722ED TroubleshootingService Diagnosis 684.6 Refrigerant ShortageError CodeU0Method of Error DetectionRefrigerant shortage detection I:Refriger

Safety Cautions SiBE05-722EDvii1.2 Warnings and Cautions Regarding Safety of UsersUse the welder in a well-ventilated place.Using the welder in an enc

Troubleshooting SiBE05-722ED69 Service DiagnosisTroubleshootingCheck No.01Refer to P.99Check No.12Refer to P.101(R19373)CautionYESNGNONOYESYESYESNONOY

SiBE05-722ED TroubleshootingService Diagnosis 704.7 Low-voltage Detection or Over-voltage DetectionError CodeU2Method of Error DetectionLow-voltage de

Troubleshooting SiBE05-722ED71 Service DiagnosisTroubleshootingCorrect the power supply.CautionBe sure to turn off the power switch before connecting

SiBE05-722ED TroubleshootingService Diagnosis 724.8 Signal Transmission Error (Between Indoor Unit and Outdoor Unit)Error CodeU4Method of Error Detect

Troubleshooting SiBE05-722ED73 Service DiagnosisTroubleshootingCheck No.11Refer to P.100CautionBe sure to turn off the power switch before connecting

SiBE05-722ED TroubleshootingService Diagnosis 744.9 Unspecified Voltage (Between Indoor Unit and Outdoor Unit)Error CodeUAMethod of Error DetectionThe

Troubleshooting SiBE05-722ED75 Service Diagnosis4.10 Outdoor Unit PCB AbnormalityError CodeE1Method of Error DetectionThe system checks if the microp

SiBE05-722ED TroubleshootingService Diagnosis 764.11 OL Activation (Compressor Overload)Error CodeE5Method of Error DetectionA compressor overload is

Troubleshooting SiBE05-722ED77 Service DiagnosisTroubleshootingCheck No.01Refer to P.99Check No.12Refer to P.101Check No.13Refer to P.102Check No.14Re

SiBE05-722ED TroubleshootingService Diagnosis 784.12 Compressor LockError CodeE6Method of Error DetectionA compressor lock is detected by checking the

SiBE05-722ED Safety CautionsviiiDo not mix air or gas other than the specified refrigerant (R-32 / R-410A / R-22) in the refrigerant system.If air ent

Troubleshooting SiBE05-722ED79 Service Diagnosis4.13 DC Fan LockError CodeE7Method of Error DetectionAn error is determined with the high-voltage fan

SiBE05-722ED TroubleshootingService Diagnosis 804.14 Input Overcurrent DetectionError CodeE8Method of Error DetectionAn input overcurrent is detected

Troubleshooting SiBE05-722ED81 Service Diagnosis4.15 Four Way Valve AbnormalityError CodeEAMethod of Error DetectionThe room temperature thermistor an

SiBE05-722ED TroubleshootingService Diagnosis 82TroubleshootingCheck No.01Refer to P.99Check No.13Refer to P.102Check No.14Refer to P.102NGOKNOOKNGOKY

Troubleshooting SiBE05-722ED83 Service Diagnosis4.16 Discharge Pipe Temperature ControlError CodeF3Method of Error DetectionAn error is determined wit

SiBE05-722ED TroubleshootingService Diagnosis 844.17 High Pressure Control in CoolingError CodeF6Method of Error DetectionHigh-pressure control (opera

Troubleshooting SiBE05-722ED85 Service Diagnosis4.18 Compressor System Sensor AbnormalityError CodeH0Method of Error DetectionThe system checks the DC

SiBE05-722ED TroubleshootingService Diagnosis 864.19 Position Sensor AbnormalityError CodeH6Method of Error DetectionA compressor start-up failure is

Troubleshooting SiBE05-722ED87 Service DiagnosisTroubleshootingCheck No.15Refer to P.103Check No.18Refer to P.106Check No.20Refer to P.107CautionBe su

SiBE05-722ED TroubleshootingService Diagnosis 884.20 DC Voltage / Current Sensor AbnormalityError CodeH8Method of Error DetectionDC voltage or DC curr