Daikin FA71FVEK Installation Manual

Pocket ManualService DiagnosisSi20 - 701_B

List of Applicable Models Si20-701_B3 R-KU SeriesSeries Outdoor Units Indoor UnitsR-KUV1R71KUV1 FAY71FAVER100KUV1 FAY100FAVER71KUV1 FHK71FV1R71KUV1 F

Troubleshooting by Remote Controller Si20-701_B93The HAP lamp of the indoor unit PCB blinks and the HAP lamp of the fan PCB is OFF.Replace the fan mot

Si20-701_B Troubleshooting by Remote Controller94Remote Controller DisplayA6Applicable ModelsFDQ200 • 250Method of Error DetectionDetect the status in

Troubleshooting by Remote Controller Si20-701_B95TroubleshootingNOYESYESNONOIs the power supply for the indoor unit fan correctly connected?Connect co

Si20-701_B Troubleshooting by Remote Controller963.8A6 Fan Motor (M1F) Lock, OverloadRemote Controller DisplayA6Applicable ModelsFMCQ, FMDQMethod of E

Troubleshooting by Remote Controller Si20-701_B97TroubleshootingNOYESNOIs the wiring from the fan motor securely connected to connectors on the indoor

Si20-701_B Troubleshooting by Remote Controller983.9A7 Swing Flap Motor Abnormality / LockRemote Controller DisplayA7Applicable ModelsFH(Y)C, FH(Y)K,

Troubleshooting by Remote Controller Si20-701_B99TroubleshootingNONOYESNOYESYESIs the connector correctly connected?NOConnect correctly.NOYESIs the li

Si20-701_B Troubleshooting by Remote Controller1003.10A8 Abnormal Power Supply VoltageRemote Controller DisplayA8Applicable ModelsFCQ, FBQ, FMDQ-B7Met

Troubleshooting by Remote Controller Si20-701_B101TroubleshootingThere are problems on the condition of power supply described above.YESNOCorrect any

Si20-701_B Troubleshooting by Remote Controller1023.11A9 Electronic Expansion Valve Coil (Y1E) AbnormalityRemote Controller DisplayA9Applicable Models

Si20-701_B List of Applicable Models4 R-LU SeriesR-KUVALR71KUVAL FAY71FAVER100KUVAL FAY100FAVER71KUVAL FHY71BVER100KUVAL FHY100BVER71KUVAL FHYC71KVER

Troubleshooting by Remote Controller Si20-701_B103TroubleshootingNOYESYESThe electronic expansion valve is connected to the indoor unit PCB.After conn

Si20-701_B Troubleshooting by Remote Controller104∗1: Coil check method for the electronic expansion valve coilDisconnect the electronic expansion val

Troubleshooting by Remote Controller Si20-701_B1053.12AF Drain System AbnormalityRemote Controller DisplayAFApplicable ModelsFH(Y)C, FH(Y)K, FH(Y)B, F

Si20-701_B Troubleshooting by Remote Controller106Is the water drainage system normal?NOClogged drain water discharge systemClogged drain pumpDefectiv

Troubleshooting by Remote Controller Si20-701_B1073.13AF Drain Level above LimitRemote Controller DisplayAFApplicable ModelsFMCQ, FMDQMethod of Error

Si20-701_B Troubleshooting by Remote Controller1083.14AJ Capacity Setting AbnormalityRemote Controller DisplayAJApplicable ModelsFH(Y)C, FH(Y)K, FH(Y)

Troubleshooting by Remote Controller Si20-701_B109TroubleshootingNote:∗1 Capacity is factory setting in the data IC on the PCB. A capacity setting ada

Si20-701_B Troubleshooting by Remote Controller110Remote Controller DisplayAJApplicable ModelsFCQ(H), FFQ, FDQ, FHQ, FAQ, FUQ, FVQMethod of Error Dete

Troubleshooting by Remote Controller Si20-701_B111TroubleshootingNOThe error is displayed again.Is the capacity setting adaptor connected to the indoo

Si20-701_B Troubleshooting by Remote Controller112Remote Controller DisplayAJApplication ModelsFBQ, FMDQ, FAQ-BU, FCQ-C7, FMCQ, FFQ-B, FHQ-B, FUQError

List of Applicable Models Si20-701_B5R-LUV1 (Twin)R71LUV1 FHY35BVE × 2R100LUV1 FHY50BVE × 2R71LUV1 FHYC35KVE × 2R100LUV1 FHYC50KVE × 2R-LUY1R71LUY1 FA

Troubleshooting by Remote Controller Si20-701_B113Remote Controller DisplayAJApplicable ModelsFCQG, FHQGMethod of Error DetectionCapacity is determine

Si20-701_B Troubleshooting by Remote Controller114Capacity setting adaptorThe capacity is set in the PCB’s memory IC. A capacity setting adaptor that

Troubleshooting by Remote Controller Si20-701_B1153.15C1 Transmission Error (between Indoor Unit PCB and Fan PCB)Remote Controller DisplayC1Applicable

Si20-701_B Troubleshooting by Remote Controller116TroubleshootingNote:∗1. Pull out and insert the connecter once and check it is absolutely connected.

Troubleshooting by Remote Controller Si20-701_B117∗2. Method to check transmission part of indoor unit PCB.1 Turn OFF the power and remove the connect

Si20-701_B Troubleshooting by Remote Controller1183.16C1 Transmission Error (between Indoor Unit PCB and Adaptor PCB)Remote Controller DisplayC1Applic

Troubleshooting by Remote Controller Si20-701_B119TroubleshootingNOYESNONONOYESIs the connection of connector on indoor unit PCB normal?Connect the co

Si20-701_B Troubleshooting by Remote Controller120NOError is displayed again?Normal operation.Check the panel PCB and indoor unit PCB.YESA

Troubleshooting by Remote Controller Si20-701_B1213.17C4, C5, C9 Thermistor AbnormalityRemote Controller DisplayC4, C5, C9Applicable ModelsFH(Y)C, FH(

Si20-701_B Troubleshooting by Remote Controller122Troubleshooting Refer to P.460.C4: Heat exchanger thermistorC5: Gas pipe thermistorC9: Suction air t

Si20-701_B List of Applicable Models6R-LUY1 (Triple)R140LUY1 FHY50BVE × 3R140LUY1 FHYC50KVE × 3R-LUY2S (Twin)R42LUY2S FHC21KV2S × 2R-LUVALR71LUVAL FAY

Troubleshooting by Remote Controller Si20-701_B1233.18C6 Defective Combination (between Indoor Unit PCB and Fan PCB)Remote Controller DisplayC6Applica

Si20-701_B Troubleshooting by Remote Controller124TroubleshootingNOYESIs the type of fan PCB correct?Replace it with correct fan PCB.NOWas indoor unit

Troubleshooting by Remote Controller Si20-701_B1253.19CC Humidity Sensor System AbnormalityRemote Controller DisplayCCApplicable ModelsFCQ(H)Method of

Si20-701_B Troubleshooting by Remote Controller126Remote Controller DisplayCCApplicable ModelsFCQ-C7, FCQG, FMCQMethod of Error DetectionEven if an er

Troubleshooting by Remote Controller Si20-701_B127TroubleshootingNote:∗1. To delete the history, the ON/OFF button of the remote controller must be

Si20-701_B Troubleshooting by Remote Controller1283.20CJ Remote Controller Thermistor AbnormalityRemote Controller DisplayCJApplicable ModelsFHY, FHYC

Troubleshooting by Remote Controller Si20-701_B129TroubleshootingNOThe error is displayed again.YESReplace the remote controller.Turn OFF the power su

Si20-701_B Troubleshooting by Remote Controller1303.21E0 Actuation of Safety DeviceRemote Controller DisplayE0Applicable ModelsRY-F/FU, R(Y)-G/GA/KUMe

Troubleshooting by Remote Controller Si20-701_B131TroubleshootingIs the safety device's lead wire correctly connected to the outdoor unit PCB?NOY

Si20-701_B Troubleshooting by Remote Controller132Remote Controller DisplayE0Applicable ModelsR-NU/PUMethod of Error DetectionActuation of each safety

List of Applicable Models Si20-701_B7 R-NU SeriesSeries Outdoor Units Indoor UnitsR-NUV1R18NUV1(4)(5) FDBG18NUV1(4)(5)R21NUV1(4)(5) FDBG21NUV1(4)(5)R

Troubleshooting by Remote Controller Si20-701_B133TroubleshootingIs the safety device's lead wire correctly connected to the outdoor unit PCB?NOY

Si20-701_B Troubleshooting by Remote Controller134Is the power supply phase correct?Change the phase if the power supply is not correct.Is the stop va

Troubleshooting by Remote Controller Si20-701_B135Remote Controller DisplayE0Applicable ModelR(Y)-LU, RR-MMethod of Error DetectionActuation of each s

Si20-701_B Troubleshooting by Remote Controller136TroubleshootingIs the safety device's lead wire correctly connected to the outdoor unit PCB?NO(

Troubleshooting by Remote Controller Si20-701_B137Note:∗1. In the case of R(Y)71, or 100, make sure the short circuiting connector is correctly mounte

Si20-701_B Troubleshooting by Remote Controller1383.22E0 Activation of Outdoor Unit Protection DeviceRemote Controller DisplayE0Applicable ModelsRZ(Y)

Troubleshooting by Remote Controller Si20-701_B139TroubleshootingIs the contact of Q1L open?Are the connectors connected to the outdoor unit PCB?NOYES

Si20-701_B Troubleshooting by Remote Controller1403.23E1 Outdoor Unit PCB AbnormalityRemote Controller DisplayE1Applicable ModelR(Y)-LU, RR-MMethod of

Troubleshooting by Remote Controller Si20-701_B141Remote Controller DisplayE1Applicable ModelsCMSQMethod of Error DetectionCheck data from E²PROMError

Si20-701_B Troubleshooting by Remote Controller142Remote Controller DisplayE1Applicable ModelsRZQ-K/H, RZQ(S)-B/C, RZQG-L, RZR-KU/HUMethod of Error De

Si20-701_B List of Applicable Models8R-NUV2SR13NUV2S FDBT13NUV2SR13NUV2S FDBT13PUV2SR18NUV2S FDBT18NUV2SR18NUV2S FDBT18PUV2SR24NUV2S FDBT24NUV2SR24NUV

Troubleshooting by Remote Controller Si20-701_B1433.24E3 High Pressure System AbnormalityRemote Controller DisplayE3Applicable ModelsRY-F, R(Y)-G/GA/K

Si20-701_B Troubleshooting by Remote Controller144TroubleshootingNote:∗1. Some models are not equipped with an HPS for control or safety.Are HPS'

Troubleshooting by Remote Controller Si20-701_B145Remote Controller DisplayE3Applicable Models R(Y)-LU, RR-MMethod of Error DetectionContinuity of the

Si20-701_B Troubleshooting by Remote Controller146TroubleshootingIs the stop valve opened?NOYESOpen the stop valves.Are HPS's for control and saf

Troubleshooting by Remote Controller Si20-701_B147Note:∗1. Some models are not equipped with an HPS for control or safety.Display error "H3"

Si20-701_B Troubleshooting by Remote Controller1483.25E3 Abnormally High Pressure Level (HPS)Remote Controller DisplayE3Applicable ModelsRZ(Y)Method o

Troubleshooting by Remote Controller Si20-701_B149TroubleshootingNote:∗1. HPS activating value is approximately 3.0 MPa.Is protection HPS connected to

Si20-701_B Troubleshooting by Remote Controller1503.26E3 High Pressure Abnormality (HPS)Remote Controller DisplayE3Applicable ModelsRZQ-K/H, RZQ(S)-B/

Troubleshooting by Remote Controller Si20-701_B151Troubleshooting Refer to P.464.Is the stop valve open?NOYESOpen the stop valve.Are control and prote

Si20-701_B Troubleshooting by Remote Controller152 Refer to P.464. Refer to P.475.ARZQ-CNOExcept RZQ-CReplace the outdoor unit PCB (A1P).Is the error

List of Applicable Models Si20-701_B9R-NUY2SR30NUY2S FDBT30NUV2SR30NUY2S FDBT33NUV2SR36NUY2S FDBT36NUV2SR42NUY2S FDBT42NUV2SR48NUY2S FDBT48NUV2SR48NUY

Troubleshooting by Remote Controller Si20-701_B1533.27E3 Actuation of High Pressure SwitchRemote Controller DisplayE3Applicable ModelsCMSQMethod of Er

Si20-701_B Troubleshooting by Remote Controller154TroubleshootingNOYESNORectify defective points, if any.YESReplace the high pressure switch.YESNOAre

Troubleshooting by Remote Controller Si20-701_B155Note:∗1: Make a comparison between the voltage of the pressure sensor and that read by the pressure

Si20-701_B Troubleshooting by Remote Controller156Remote Controller DisplayE3Applicable Models RZQG71, 100LMethod of Error Detection[In cooling] The

Troubleshooting by Remote Controller Si20-701_B157TroubleshootingThe outdoor unit heat exchanger is clogged or blocked.YESNOYESAre the characteristics

Si20-701_B Troubleshooting by Remote Controller158 Refer to P.464. Refer to P.475.The indoor unit fan is rotating during operation.NOYESYESAre the cha

Troubleshooting by Remote Controller Si20-701_B159Remote Controller DisplayE3Applicable Models RZQG125, 140LMethod of Error Detection[In cooling] Det

Si20-701_B Troubleshooting by Remote Controller160TroubleshootingAre the connection of the connector on PCB and the connection to the switch unit norm

Troubleshooting by Remote Controller Si20-701_B161 Refer to P.464. Refer to P.475.Are the characteristics of the outdoor unit intermediate thermistor

Si20-701_B Troubleshooting by Remote Controller1623.28E4 Low Pressure System AbnormalityRemote Controller DisplayE4Applicable ModelsRY-F, R(Y)-G/GA/KU

Si20-701_B List of Applicable Models10 R-PU SeriesSeries Outdoor Units Indoor UnitsR-PUV2SR30PUV2S FDBT30PUV2SR33PUV2S FDBT33PUV2SR36PUV2S FDBT36PUV2

Troubleshooting by Remote Controller Si20-701_B163TroubleshootingIs low pressure sensor for safety connected to the outdoor unit PCB?Is the stop valve

Si20-701_B Troubleshooting by Remote Controller1643.29E4 Actuation of Pressure SensorRemote Controller DisplayE4Applicable ModelsRZQ-K, RZQ(S)-C, RZQG

Troubleshooting by Remote Controller Si20-701_B165 Defective outdoor unit PCB Abnormal drop of low pressure(Inadequate refrigerant)(Defective refrig

Si20-701_B Troubleshooting by Remote Controller166 Refer to P.468. Refer to P.470.Is the pressure sensor properly connected to the outdoor unit PCB?NO

Troubleshooting by Remote Controller Si20-701_B167 Refer to P.466.YESNOIs low-pressure abnormally low?CHECK 5Replace the outdoor unit PCB.Correct the

Si20-701_B Troubleshooting by Remote Controller1683.30E4 Actuation of Low Pressure SensorRemote Controller DisplayE4Applicable ModelsCMSQMethod of Err

Troubleshooting by Remote Controller Si20-701_B169Troubleshooting Refer to P.470. Refer to P.485.Check if the “low pressure” value and the actual meas

Si20-701_B Troubleshooting by Remote Controller170Note:∗1. Make a comparison between the voltage of the pressure sensor and that read by the pressure

Troubleshooting by Remote Controller Si20-701_B171Remote Controller DisplayE4Applicable ModelsRZQ-H, RZQ(S)-BMethod of Error DetectionThe protection d

Si20-701_B Troubleshooting by Remote Controller172Troubleshooting Refer to P.466.Is the stop valve opened?NOYESOpen the stop valve.Is there a continui

List of Applicable Models Si20-701_B11 RR-M Series RY-FU SeriesSeries Outdoor Units Indoor UnitsRR-MV1RR71MV1 FAQ71BVV1BRR71MV1 FBQ71DV1RR71MV1 FCQ7

Troubleshooting by Remote Controller Si20-701_B1733.31E4 Low Pressure System AbnormalityRemote Controller DisplayE4Applicable ModelsRZQ-CMethod of Err

Si20-701_B Troubleshooting by Remote Controller174Troubleshooting Refer to P.466.Is the stop valve open?NOYESOpen the stop valve.Is the connector (∗1)

Troubleshooting by Remote Controller Si20-701_B175∗1: Connector code: X31A∗2: Method of voltage measurement∗3: Pressure/ voltage characteristic of the

Si20-701_B Troubleshooting by Remote Controller1763.32E5 Compressor Motor LockRemote Controller DisplayE5Applicable ModelsRZQ-K/H, RZQ(S)-B/C, RZR-KU/

Troubleshooting by Remote Controller Si20-701_B177TroubleshootingIs the UVWN wiring normal?Is the stop valve open?NOYESOpen the stop valve.Are inverte

Si20-701_B Troubleshooting by Remote Controller178Remote Controller DisplayE5Applicable ModelsCMSQMethod of Error DetectionInverter PCB takes the posi

Troubleshooting by Remote Controller Si20-701_B179TroubleshootingAre wire connections made to phases U, V, and W in the proper order and manner?The co

Si20-701_B Troubleshooting by Remote Controller180Some phase has a broken wire.The insulation resistance is low (i.e., not more than 100kΩ.)YESNORepla

Troubleshooting by Remote Controller Si20-701_B1813.33E6 Compressor OvercurrentRemote Controller DisplayE6Applicable ModelR(Y)-LU, RR-MMethod of Error

Si20-701_B Troubleshooting by Remote Controller182TroubleshootingNote:For details, refer to information in troubleshooting “PJ”. Refer to P.464.Is the

Si20-701_B List of Applicable Models12 RY-FV Series RY-G Series RY-GAV SeriesSeries Outdoor Units Indoor UnitsRY-FV1ARY35FV1A FHY35BVERY35FV1A FHYB

Troubleshooting by Remote Controller Si20-701_B183∗1. Approximate Input current valueModelInput current valueModelInput current valueR71LUVAL 25.30 A

Si20-701_B Troubleshooting by Remote Controller1843.34E7 Outdoor Unit Fan Motor AbnormalityRemote Controller DisplayE7Applicable ModelsRZQ-K/H, RZQ(S)

Troubleshooting by Remote Controller Si20-701_B185Troubleshooting Refer to P.459.Is there any foreign matter around the fan?Is the fan motor connector

Si20-701_B Troubleshooting by Remote Controller186The error is displayed again.Is the resistance value of the fan motor normal?YESReplace the inverter

Troubleshooting by Remote Controller Si20-701_B187Remote Controller DisplayE7Applicable ModelsRZQ-C7Method of Error DetectionDefective fan motor syste

Si20-701_B Troubleshooting by Remote Controller188TroubleshootingThere is a foreign substance found around the object fan.YESNORemove the foreign subs

Troubleshooting by Remote Controller Si20-701_B189NONONOCheck the fan motor connector (power supply wire)No continuity on the fan inverter PCB fuseUna

Si20-701_B Troubleshooting by Remote Controller190 Refer to P.459. Refer to P.460.NOCheck the fan motor connector (signal wire)Put the power supply ON

Troubleshooting by Remote Controller Si20-701_B191Remote Controller DisplayE7Applicable ModelsCMSQMethod of Error DetectionError of fan motor system i

Si20-701_B Troubleshooting by Remote Controller192TroubleshootingAre there any foreign matters around the fan?YESNORemove the foreign matters.Any of t

SkyAir Series Si20-701_Bi1. List of Applicable Models ... 12. Symptom-based Troubleshooting ... 292.1

List of Applicable Models Si20-701_B13 RY-KU SeriesSeries Outdoor Units Indoor UnitsRY-KUV1RY71KUV1 FAY71FAVERY100KUV1 FAY100FAVERY71KUV1 FHY71BVERY1

Troubleshooting by Remote Controller Si20-701_B193NONOWith the connector disconnected from the fan motor, the fan cannot be rotated by hand.Connectors

Si20-701_B Troubleshooting by Remote Controller194 Refer to P.459. Refer to P.460.NOCheck for the fan motor connector (Power supply cable)Check for th

Troubleshooting by Remote Controller Si20-701_B195NOReplace the outdoor unit fan motor.The LED (HAP) on the compressor inverter PCB is blinking, but t

Si20-701_B Troubleshooting by Remote Controller1963.35E9 Electronic Expansion Valve AbnormalityRemote Controller DisplayE9Applicable ModelsRY-F, R(Y)-

Troubleshooting by Remote Controller Si20-701_B197Troubleshooting Refer to P.473.Normal reset?YESNOYESExternal factor (Noise, etc.).Is the electronic

Si20-701_B Troubleshooting by Remote Controller198Remote Controller DisplayE9Applicable ModelsRZ(Y), RZQ-CMethod of Error DetectionFor RZ(Y)The error

Troubleshooting by Remote Controller Si20-701_B199TroubleshootingDoes the unit reset?Is electronic expansion valve connector disconnected?YESCorrect t

Si20-701_B Troubleshooting by Remote Controller2003.36E9 Electronic Expansion Valve Coil AbnormalityRemote Controller DisplayE9Applicable ModelsCMSQMe

Troubleshooting by Remote Controller Si20-701_B201TroubleshootingReturn to normal?YESNOExternal factor other than error (for example, noise etc.).Elec

Si20-701_B Troubleshooting by Remote Controller202Note:∗1. Make measurement of resistance between the connector pins, and then make sure the resistanc

Si20-701_B List of Applicable Models14 RY-LU SeriesSeries Outdoor Units Indoor UnitsRY-LUV1RY71LUV1 FAY71FAVERY100LUV1 FAY100FAVERY71LUV1 FAY71LVERY7

Troubleshooting by Remote Controller Si20-701_B203Remote Controller DisplayE9Applicable ModelsRZQ-K, RZQ(S)-B, RZQG, RZR-KU/HUMethod of Error Detectio

Si20-701_B Troubleshooting by Remote Controller204Troubleshooting Refer to P.473.The error is displayed again.YESNOYESIs the electronic expansion valv

Troubleshooting by Remote Controller Si20-701_B205 Refer to P.460. Refer to P.470.Is the temperature sensor of each thermistor (suction pipe, discharg

Si20-701_B Troubleshooting by Remote Controller206 Refer to P.474.The error is displayed again.YESNOReplace the outdoor unit PCB.External factor (Nois

Troubleshooting by Remote Controller Si20-701_B207Remote Controller DisplayE9Applicable ModelsRZQ-H, RZQ(S)-CMethod of Error DetectionThe error is det

Si20-701_B Troubleshooting by Remote Controller208Troubleshooting Refer to P.473.The error is displayed again.YESNOIs the electronic expansion valve c

Troubleshooting by Remote Controller Si20-701_B209 Refer to P.460. Refer to P.474.NOYESReplace the defective thermistor.Are the characteristics of eac

Si20-701_B Troubleshooting by Remote Controller2103.37F3 Discharge Pipe Temperature AbnormalityRemote Controller DisplayF3Applicable ModelsRY-F, R(Y)-

Troubleshooting by Remote Controller Si20-701_B211TroubleshootingIs the amount of refrigerant correct?NOYESCharge with the proper amount of refrigeran

Si20-701_B Troubleshooting by Remote Controller212Remote Controller DisplayF3Applicable Models R(Y)-LU, RR-MMethod of Error DetectionThe error is dete

List of Applicable Models Si20-701_B15RY-LUY1RY71LUY1 FAY71FAVERY100LUY1 FAY100FAVERY71LUY1 FAY71LVERY140LUY1 FDY06KAY1RY71LUY1 FDY71KFV1RY100LUY1 FDY

Troubleshooting by Remote Controller Si20-701_B213Troubleshooting Refer to P.477.Has the thermistor come off the discharge pipe port?NOYESCorrectly pl

Si20-701_B Troubleshooting by Remote Controller214Remote Controller DisplayF3Applicable ModelsRZ(Y)Method of Error DetectionThe error is detected acco

Troubleshooting by Remote Controller Si20-701_B215Troubleshooting Refer to P.460.Is discharge pipe temperature 123.5ºC or higher?YESNOError in refrige

Si20-701_B Troubleshooting by Remote Controller216Remote Controller DisplayF3Applicable ModelsCMSQMethod of Error DetectionAbnormality is detected acc

Troubleshooting by Remote Controller Si20-701_B217Troubleshooting Refer to P.460.Discharge pipe temperature is 115˚C or higher when the unit stop by e

Si20-701_B Troubleshooting by Remote Controller2183.38F3 Discharge Pipe Temperature ControlRemote Controller DisplayF3Applicable ModelsRZQ-K/H, RZQ(S)

Troubleshooting by Remote Controller Si20-701_B219Troubleshooting Refer to P.460.Is the discharge pipe temperature high?YESNOAbnormality in refrigeran

Si20-701_B Troubleshooting by Remote Controller2203.39F6 Abnormal Heat Exchanging TemperatureRemote Controller DisplayF6Applicable ModelR(Y)71~100LUMe

Troubleshooting by Remote Controller Si20-701_B221Troubleshooting Refer to P.464.NOIs the stop valve open?NOYESOpen the stop valve.Check for the insta

Si20-701_B Troubleshooting by Remote Controller2223.40F6 Refrigerant OverchargedRemote Controller DisplayF6Applicable ModelsCMSQMethod of Error Detect

Si20-701_B List of Applicable Models16 RZ-L SeriesRY-LUY1RY71LUY1 FHY35BVE × 2RY100LUY1 FHY50BVE × 2RY125LUY1 FHY60BVE × 2RY140LUY1 FHY71BVE × 2RY71L

Troubleshooting by Remote Controller Si20-701_B223Troubleshooting Refer to P.460.NOYESAre the above thermistor installed on pipes correctly?Is the cha

Si20-701_B Troubleshooting by Remote Controller2243.41H3 High Pressure Switch AbnormalityRemote Controller DisplayH3Applicable ModelsRY-F, R(Y)-G/GA/K

Troubleshooting by Remote Controller Si20-701_B225TroubleshootingAre high pressure switch for control and safety connected to the outdoor unit PCB?NOY

Si20-701_B Troubleshooting by Remote Controller226Remote Controller DisplayH3Applicable ModelR(Y)125 • 140LUMethod of Error DetectionThe protection de

Troubleshooting by Remote Controller Si20-701_B227TroubleshootingIs the connector of high pressure switch correctly connected to the outdoor unit PCB?

Si20-701_B Troubleshooting by Remote Controller228Remote Controller DisplayH3Applicable ModelsRZ(Y)Method of Error DetectionThe protection device circ

Troubleshooting by Remote Controller Si20-701_B2293.42H3 High Pressure Switch System AbnormalityRemote Controller DisplayH3Applicable ModelsRZQ-K/H, R

Si20-701_B Troubleshooting by Remote Controller230TroubleshootingIs protection high pressure switch connector correctly connected to outdoor unit PCB?

Troubleshooting by Remote Controller Si20-701_B2313.43H4 Low Pressure Sensor System AbnormalityRemote Controller DisplayH4Applicable ModelsRZQ-HMethod

Si20-701_B Troubleshooting by Remote Controller232Troubleshooting Refer to P.466.Is low pressure sensor connector connected to outdoor unit PCB?NOYESY

List of Applicable Models Si20-701_B17 RZQ-B SeriesSeries Outdoor Units Indoor UnitsRZQ-B7V3B RZQS100B7V3B FCQ35C7VEB × 3RZQ-B8W1BRZQ100B8W1B FAQ100B

Troubleshooting by Remote Controller Si20-701_B233Remote Controller DisplayH4Applicable ModelsRZQ-BMethod of Error Detection Check the continuity of

Si20-701_B Troubleshooting by Remote Controller234Troubleshooting Refer to P.464.Is LPS connector connected to outdoor unit PCB?NOYESYESYESIs there co

Troubleshooting by Remote Controller Si20-701_B2353.44H7 Outdoor Unit Fan Motor Signal AbnormalityRemote Controller DisplayH7Applicable ModelsCMSQ, RZ

Si20-701_B Troubleshooting by Remote Controller236TroubleshootingNote:∗1: Disconnect connector and measure the following resistance.Is the fan motor c

Troubleshooting by Remote Controller Si20-701_B2373.45H9, J3, J5, J6, J7, J8 Thermistor System AbnormalityRemote Controller DisplayH9, J3, J5, J6, J7,

Si20-701_B Troubleshooting by Remote Controller238Troubleshooting Refer to P.459.Error Code Defective ThermistorH9 Outdoor air thermistor J3 Dischar

Troubleshooting by Remote Controller Si20-701_B2393.46H9 Outdoor Air Thermistor System AbnormalityRemote Controller DisplayH9Applicable ModelsRY-F/FU,

Si20-701_B Troubleshooting by Remote Controller240Remote Controller DisplayH9Applicable ModelsRZ(Y), CMSQMethod of Error DetectionThe detection is bas

Troubleshooting by Remote Controller Si20-701_B2413.47J1 Pressure Sensor AbnormalityRemote Controller DisplayJ1Applicable ModelsRZQ-K, RZQ(S)-C, RZR-K

Si20-701_B Troubleshooting by Remote Controller242Troubleshooting Refer to P.470.YESIs it connected correctly?NOYESConnect correctly.Check if the conn

Si20-701_B List of Applicable Models18RZQ-B8W1B (Triple)RZQ100B8W1B FBQ35B7V1 × 3RZQ125B8W1B FBQ50B7V1 × 3RZQ140B8W1B FBQ50B7V1 × 3RZQ100B8W1B FCQ35C7

Troubleshooting by Remote Controller Si20-701_B2433.48J2 Current Sensor System AbnormalityRemote Controller DisplayJ2Applicable ModelR(Y)-LU, RR-MMeth

Si20-701_B Troubleshooting by Remote Controller244TroubleshootingIs the applied model R(Y)71 or 100?YESYESNONOYESThe compressor has continuity.Turn th

Troubleshooting by Remote Controller Si20-701_B2453.49J3 Discharge Pipe Thermistor System AbnormalityRemote Controller DisplayJ3Applicable ModelsRY-F/

Si20-701_B Troubleshooting by Remote Controller246Remote Controller DisplayJ3Applicable ModelsRZ(Y), CMSQMethod of Error DetectionThe error is detecte

Troubleshooting by Remote Controller Si20-701_B247Troubleshooting Refer to P.460.YESConnector is connected to the outdoor unit PCB.NOYESConnect thermi

Si20-701_B Troubleshooting by Remote Controller2483.50J5 Suction Pipe Thermistor AbnormalityRemote Controller DisplayJ5Applicable ModelsCMSQMethod of

Troubleshooting by Remote Controller Si20-701_B249Troubleshooting Refer to P.460.Connector is connected to the outdoor unit PCB.NOYESYESConnect the co

Si20-701_B Troubleshooting by Remote Controller2503.51J6 Heat Exchanger Thermistor System AbnormalityRemote Controller DisplayJ6Applicable ModelsRY-F/

Troubleshooting by Remote Controller Si20-701_B251Remote Controller DisplayJ6Applicable ModelsRZ(Y), CMSQMethod of Error DetectionThe error is detecte

Si20-701_B Troubleshooting by Remote Controller2523.52J7 Liquid Pipe Thermistor AbnormalityRemote Controller DisplayJ7Applicable ModelsCMSQMethod of E

List of Applicable Models Si20-701_B19 RZQ-C SeriesSeries Outdoor Units Indoor UnitsRZQ-C7V1BRZQ71C7V1B FAQ71BUV1BRZQ100C7V1B FAQ100BUV1BRZQ71C7V1B F

Troubleshooting by Remote Controller Si20-701_B253Troubleshooting Refer to P.460.YESIs the connector for liquid pipe thermistor connected to the outdo

Si20-701_B Troubleshooting by Remote Controller2543.53J9 Subcooling Heat Exchanger Gas Pipe Thermistor AbnormalityRemote Controller DisplayJ9Applicabl

Troubleshooting by Remote Controller Si20-701_B255Troubleshooting Refer to P.460.YESIs the connector for subcooling heat exchanger gas pipe thermistor

Si20-701_B Troubleshooting by Remote Controller2563.54JA High Pressure Sensor AbnormalityRemote Controller DisplayJAApplicable ModelsRZQ, CMSQMethod o

Troubleshooting by Remote Controller Si20-701_B257TroubleshootingNote:∗1: Voltage measurement pointThe high pressure sensor is connected to X32A of ou

Si20-701_B Troubleshooting by Remote Controller258∗2: “Pressure Sensor”, pressure / voltage characteristics table.Detected pressure PH (MPa)Output vol

Troubleshooting by Remote Controller Si20-701_B2593.55JC Suction Pipe Pressure Sensor AbnormalityRemote Controller DisplayJCApplicable ModelsRZQ(S)-B,

Si20-701_B Troubleshooting by Remote Controller260Troubleshooting∗1: Voltage measurement point∗2: Refer to pressure sensor, pressure/voltage character

Troubleshooting by Remote Controller Si20-701_B2613.56L1 Outdoor Unit PCB AbnormalityRemote Controller DisplayL1Applicable ModelsRZQ-K/H, RZQ(S)-C, RZ

Si20-701_B Troubleshooting by Remote Controller262TroubleshootingIs the power supply voltage between 180 and 220 VAC?NOYESYESYESYESRequest an improvem

Si20-701_B List of Applicable Models20RZQ-C7V1B (Twin)RZQ140C7V1B FAQ71BUV1B × 2RZQ71C7V1B FBQ35B7V1 × 2RZQ100C7V1B FBQ50B7V1 × 2RZQ125C7V1B FBQ60B7V1

Troubleshooting by Remote Controller Si20-701_B2633.57L1 Outdoor Inverter PCB AbnormalityRemote Controller DisplayL1Applicable ModelsRZQ-C7Method of E

Si20-701_B Troubleshooting by Remote Controller264Troubleshooting Refer to P.488.YESExternal factors (Noise, etc.)Does it return normally?NONOReplace

Troubleshooting by Remote Controller Si20-701_B2653.58L1 Outdoor Unit PCB AbnormalityRemote Controller DisplayL1Applicable ModelsRZQGMethod of Error D

Si20-701_B Troubleshooting by Remote Controller266TroubleshootingIs the power supply voltage between 180 and 220 VAC?NOYESRequest an improvement to ma

Troubleshooting by Remote Controller Si20-701_B267 Refer to P.459.Error is displayed again?YESReplace the outdoor unit PCB.Turn the power ON again.ANO

Si20-701_B Troubleshooting by Remote Controller2683.59L4 Overcurrent of DC Output (Instantaneous)Remote Controller DisplayL4Applicable ModelsRZ(Y)Meth

Troubleshooting by Remote Controller Si20-701_B269TroubleshootingNote:∗1. Fin temperature detection valuesModel Detection ResetRZ(Y)71L 85.5°C 80.5°CR

Si20-701_B Troubleshooting by Remote Controller2703.60L4 Radiation Fin Temperature RiseRemote Controller DisplayL4Applicable ModelsRZQ-K/H, RZQ(S)-B/C

Troubleshooting by Remote Controller Si20-701_B271TroubleshootingCan it be considered that the radiation fin temperature was high? (∗1)YESNOYESNOElimi

Si20-701_B Troubleshooting by Remote Controller272Note:∗1. Radiation fin temperature detection valueModel Detection ResetRZQRZQ100~140B8W1B76°C 66°CRZ

List of Applicable Models Si20-701_B21RZQ-C7V1B (Double-twin)RZQ125C7V1B FBQ35B7V1 × 4RZQ140C7V1B FBQ35B7V1 × 4RZQ125C7V1B FCQ35C7VEB × 4RZQ140C7V1B F

Troubleshooting by Remote Controller Si20-701_B273Remote Controller DisplayL4Applicable ModelsCMSQMethod of Error DetectionFin temperature is detected

Si20-701_B Troubleshooting by Remote Controller274TroubleshootingYESYESRadiation fin temperature of the compressor inverter is high.NONOTurn ON the po

Troubleshooting by Remote Controller Si20-701_B275Refer to on P.460.X111A : EH CONNECTOR WHITECHECK 3

Si20-701_B Troubleshooting by Remote Controller276Remote Controller DisplayL4Applicable ModelsRZQ-C7Method of Error DetectionRadiation fin temperature

Troubleshooting by Remote Controller Si20-701_B277ASupply power and start operation to check if the error occurs again.YESReplace the inverter PCB.Con

Si20-701_B Troubleshooting by Remote Controller2783.61L5 Overcurrent of DC Output (Instantaneous)Remote Controller DisplayL5Applicable ModelsRZ(Y)Meth

Troubleshooting by Remote Controller Si20-701_B279TroubleshootingNote:∗1. Guideline valuesModel Instantaneous overcurrent detection valueRZ(Y)71~125L

Si20-701_B Troubleshooting by Remote Controller280Note:If an overcurrent results during motor pre-heating, reset by remote controller may not be possi

Troubleshooting by Remote Controller Si20-701_B2813.62L5 Momentary Overcurrent of Inverter CompressorRemote Controller DisplayL5Applicable ModelsRZQ-C

Si20-701_B Troubleshooting by Remote Controller282TroubleshootingThe insulation resistance is low (i.e., not more than 100 kΩ.)Are the wiring and wiri

Si20-701_B List of Applicable Models22 RZQG-L SeriesRZQ-C7Y1B (Double-twin)RZQ200C7Y1B FBQ50B7V1 × 4 RZQ250C7Y1B FBQ60B7V1 × 4RZQ200C7Y1B FCQ50C7VE

Troubleshooting by Remote Controller Si20-701_B283 Refer to P.468.AReplace the PCB (A3P).Restart the compressor, and then check whether or not the err

Si20-701_B Troubleshooting by Remote Controller2843.63L5 Output Overcurrent DetectionRemote Controller DisplayL5Applicable ModelsRZQGMethod of Error D

Troubleshooting by Remote Controller Si20-701_B285Troubleshooting Refer to P.464.Is the stop valve open?The compressor is grounded and short circuited

Si20-701_B Troubleshooting by Remote Controller286NOIs instantaneous voltage drop generated?YESCorrect the power supply.Compressor inspection.Inspect

Troubleshooting by Remote Controller Si20-701_B2873.64L5 Inverter Compressor AbnormalityRemote Controller DisplayL5Applicable ModelsCMSQMethod of Erro

Si20-701_B Troubleshooting by Remote Controller288 Refer to P.488.Some phase has a broken wire.YESYESNOThe insulation resistance is low (i.e., not mor

Troubleshooting by Remote Controller Si20-701_B289YESYESReplace the inverter PCB.Restart the compressor, and then check whether or not the error recur

Si20-701_B Troubleshooting by Remote Controller2903.65L5 Output Overcurrent DetectionRemote Controller DisplayL5Applicable ModelsRZQ-K/H, RZQ(S)-B/C,

Troubleshooting by Remote Controller Si20-701_B291Troubleshooting Refer to P.464.Is the stop valve open?NOYESNOYESIs the compressor coil disconnected

Si20-701_B Troubleshooting by Remote Controller292Check the power supply voltage.Is instantaneous voltage drop generated?YESCorrect the power supply.C

Si20-701_B SkyAir Seriesii3.14AJ Capacity Setting Abnormality ...1083.15C1 Transmission Error(between Indoor Unit PCB and Fan PCB)

List of Applicable Models Si20-701_B23 RZQ-H Series RZQ-K SeriesSeries Outdoor Units Indoor UnitsRZQ-HYRZQ100HY4A FBQ100DV1RZQ125HY4A FBQ125DV1RZQ16

Troubleshooting by Remote Controller Si20-701_B293Note:∗1. Approximate valueWhen operating compressor with compressor output line disconnected, the co

Si20-701_B Troubleshooting by Remote Controller2943.66 (L8) Electronic Thermal Switch (Time Lag)Remote Controller Display(L8)∗ No display on remote co

Troubleshooting by Remote Controller Si20-701_B295TroubleshootingNote:∗1. Electronic thermal switch detecting valueModel Cool/Heat ∗2 Detection ValueR

Si20-701_B Troubleshooting by Remote Controller296Note:∗2. • Detecting values vary according to operating frequency.• Detecting value decrease 10% for

Troubleshooting by Remote Controller Si20-701_B2973.67L8 Inverter Current AbnormalityRemote Controller DisplayL8Applicable ModelsCMSQMethod of Error D

Si20-701_B Troubleshooting by Remote Controller298TroubleshootingOutput current checkADisconnect the cable from the compressor, and then check the com

Troubleshooting by Remote Controller Si20-701_B299ACheck the power transistor on the inverter PCB using a multiple tester.Connect the compressor cable

Si20-701_B Troubleshooting by Remote Controller3003.68L8 Inverter Compressor OvercurrentRemote Controller DisplayL8Applicable ModelsRZQ-C7Method of Er

Troubleshooting by Remote Controller Si20-701_B301TroubleshootingOutput current checkYESIs the stop valve open?NOYESOpen the stop valve.Check if the c

Si20-701_B Troubleshooting by Remote Controller302 Refer to P.488.YESNOError code “L8” is displayed again.Continue the operation.NOCheck if the pressu

Si20-701_B List of Applicable Models24 RZQS-B SeriesSeries Outdoor Units Indoor UnitsRZQS-B7V3BRZQS71B7V3B FAQ71BUV1BRZQS100B7V3B FAQ100BUV1BRZQS71B7

Troubleshooting by Remote Controller Si20-701_B3033.69L8 Electronic Thermal (Time Lag)Remote Controller DisplayL8Applicable ModelsRZQGMethod of Error

Si20-701_B Troubleshooting by Remote Controller304TroubleshootingYESNONOYESIs the secondary current of the inverter higher than A (*1) for each phase?

Troubleshooting by Remote Controller Si20-701_B305Note:∗1 Secondary electronic thermal detection value Refer to P.464. Refer to P.468. Refer to P.475.

Si20-701_B Troubleshooting by Remote Controller306Remote Controller DisplayL8Applicable ModelsRZQ-K/H, RZQ(S)-B/C, RZR-KU/HUMethod of Error DetectionT

Troubleshooting by Remote Controller Si20-701_B307TroubleshootingNote:∗1. Electronic thermal detection valueModel Detection valueRZQRZQ100-140B8W1BCoo

Si20-701_B Troubleshooting by Remote Controller308Note:∗1. When operating compressor with compressor output line disconnected, the compressor stops du

Troubleshooting by Remote Controller Si20-701_B3093.70L9 Stall Prevention (Time Lag)Remote Controller DisplayL9Applicable ModelsRZ(Y)Method of Error D

Si20-701_B Troubleshooting by Remote Controller310TroubleshootingNote:∗1. Guideline valuesModel Instantaneous overcurrent detection valueRZ(Y)71~125L

Troubleshooting by Remote Controller Si20-701_B3113.71L9 Inverter Startup ErrorRemote Controller DisplayL9Applicable ModelsCMSQ, RZQ-C7Method of Error

Si20-701_B Troubleshooting by Remote Controller312TroubleshootingADisconnect the cable from the compressor, and then check the compressor for the insu

List of Applicable Models Si20-701_B25 RZQS-C SeriesSeries Outdoor Units Indoor UnitsRZQS-C7V1BRZQS125C7V1B FBQ125B7V3BRZQS125C7V1B FCQ125C7VEBRZQS14

Troubleshooting by Remote Controller Si20-701_B313errorNOIs a difference between high pressure and low pressure prior to startup 0.2MPa?YESNOYESAEnd o

Si20-701_B Troubleshooting by Remote Controller314Remote Controller DisplayL9Applicable ModelsRZQ-K/H, RZQ(S)-B/C, RZQG, RZR-KU/HUMethod of Error Dete

Troubleshooting by Remote Controller Si20-701_B315Troubleshooting Refer to P.464.Is the difference between high and low pressure before startup not mo

Si20-701_B Troubleshooting by Remote Controller316Note:∗1. When operating compressor with compressor output line disconnected, the compressor stops du

Troubleshooting by Remote Controller Si20-701_B3173.72LC Transmission Error Between Inverter and Control PCBRemote Controller DisplayLCApplicable Mode

Si20-701_B Troubleshooting by Remote Controller318TroubleshootingYESYESYESYESYESDisconnect the cable from the compressor, and then check the compresso

Troubleshooting by Remote Controller Si20-701_B319Disconnect the cable from the fan, and then check the fan motor for the insulation resistance.Check

Si20-701_B Troubleshooting by Remote Controller320The fan driver PCB do not blink.Is the micro controller normal monitor (green) of the PCB blinking?T

Troubleshooting by Remote Controller Si20-701_B321Remote Controller DisplayLCApplicable ModelsRZQGMethod of Error DetectionCheck whether transmission

Si20-701_B Troubleshooting by Remote Controller322TroubleshootingIs the fan motor connector connected?NOYESNOConnect the connector.Replace the outdoor

Si20-701_B List of Applicable Models26 RZR-HU Series RZR-KU SeriesSeries Outdoor Units Indoor UnitsRZR-HUY1RZR100HUY1 FBQ100DV1RZR125HUY1 FBQ125DV1R

Troubleshooting by Remote Controller Si20-701_B3233.73LC Transmission Error (between Control PCB and Inverter PCB)Remote Controller DisplayLCApplicabl

Si20-701_B Troubleshooting by Remote Controller324TroubleshootingIs the fan motor connector connected?NOYESConnect the connector, and turn ON again.Ar

Troubleshooting by Remote Controller Si20-701_B325Is the micro-computer normal monitor (green) on inverter PCB blinking?NOYESReplace the outdoor unit

Si20-701_B Troubleshooting by Remote Controller3263.74P1 Inverter Over-Ripple ProtectionRemote Controller DisplayP1Applicable ModelsCMSQ, RZQ-C7Method

Troubleshooting by Remote Controller Si20-701_B327TroubleshootingIs the voltage imbalance applied to the inverter in excess of 14 V? (∗2)Imbalance in

Si20-701_B Troubleshooting by Remote Controller328Power supply voltage imbalanceGive the user a copy of "notification of inspection results"

Troubleshooting by Remote Controller Si20-701_B3293.75P1 Open Phase or Power Supply Voltage ImbalanceRemote Controller DisplayP1Applicable ModelsRZQ-K

Si20-701_B Troubleshooting by Remote Controller330TroubleshootingNote:∗1. Target : ±10V between phases, R-S, S-T, T-RCheck LED on the outdoor unit PCB

Troubleshooting by Remote Controller Si20-701_B3313.76P4 Radiation Fin Thermistor AbnormalityRemote Controller DisplayP4Applicable ModelsRZ(Y)Method o

Si20-701_B Troubleshooting by Remote Controller332Troubleshooting Refer to P.460.Is it normal?NOYESReplace the thermistor.Is reset possible?NOYESDefec

List of Applicable Models Si20-701_B27 RZY-L SeriesRZR-KUV2SRZR30KUV2S FBQ30DV2SRZR36KUV2S FBQ36DV2SRZR42KUV2S FBQ42DV2SRZR48KUV2S FBQ48DV2SRZR30KUV2

Troubleshooting by Remote Controller Si20-701_B333Remote Controller DisplayP4Applicable ModelsCMSQMethod of Error DetectionResistance of radiation fin

Si20-701_B Troubleshooting by Remote Controller334TroubleshootingDisconnect the cable from the fan, and then check the fan motor for the insulation re

Troubleshooting by Remote Controller Si20-701_B3353.77P4 Radiation Fin Thermistor or Related AbnormalityRemote Controller DisplayP4Applicable ModelsRZ

Si20-701_B Troubleshooting by Remote Controller3363.78PJ Defective Capacity SettingRemote Controller DisplayPJApplicable ModelR(Y)-LU, RR-MMethod of E

Troubleshooting by Remote Controller Si20-701_B337TroubleshootingNote:∗1. The capacity setting adaptor is not connected at the time of shipment from f

Si20-701_B Troubleshooting by Remote Controller3383.79PJ Error in Capacity SettingRemote Controller DisplayPJApplicable ModelsRZ(Y)Method of Error Det

Troubleshooting by Remote Controller Si20-701_B3393.80PJ Field Setting Error after Replacing Main PCB or Defective Combination of PCBRemote Controller

Si20-701_B Troubleshooting by Remote Controller340TroubleshootingHas the PCB been replaced?NOYESYESWhen replacing the main PCB, were field setting pro

Troubleshooting by Remote Controller Si20-701_B3413.81PJ Defective Combination of Inverter and Fan DriverRemote Controller DisplayPJApplicable ModelsR

Si20-701_B Troubleshooting by Remote Controller342TroubleshootingIs the type of the compressor inverter PCB correct?NOYESYESIs the type of the fan inv

Si20-701_B List of Applicable Models28 CMSQ SeriesSeries Outdoor Units Indoor UnitsCMSQ-A7W1B (Multi)CMSQ200A7W1BCMSQ250A7W1BFMCQ50A7VEBFMCQ60A7VEBFM

Troubleshooting by Remote Controller Si20-701_B3433.82PJ Defective Capacity SettingRemote Controller DisplayPJApplicable ModelsRZQGMethod of Error Det

Si20-701_B Troubleshooting by Remote Controller344TroubleshootingNote:∗ Capacity setting adaptor is not connected at factory. (Capacity is written in

Troubleshooting by Remote Controller Si20-701_B345Remote Controller DisplayPJApplicable ModelsRZQ-K/H, RZQ(S)-B/C, RZR-KU/HUMethod of Error DetectionC

Si20-701_B Troubleshooting by Remote Controller346TroubleshootingNote:∗1. Capacity setting adaptor is not connected at factory. (Capacity is written i

Troubleshooting by Remote Controller Si20-701_B3473.83U0 Refrigerant ShortageRemote Controller DisplayU0Applicable ModelsRY-F, R(Y)-G/GA/KU/LU, RR-MMe

Si20-701_B Troubleshooting by Remote Controller348Remote Controller DisplayU0Applicable ModelsRZ(Y)Method of Error DetectionRefrigerant shortage is de

Troubleshooting by Remote Controller Si20-701_B3493.84U0 Low Pressure Drop Due to Refrigerant Shortage or Electronic Expansion Valve FailureRemote Con

Si20-701_B Troubleshooting by Remote Controller350Troubleshooting Refer to P.470.CoolingNONOCautionBe sure to turn off the power switch before connect

Troubleshooting by Remote Controller Si20-701_B351 Refer to P.460.NOResistance is normal when measured with the suction pipe thermistor (R7T) and coil

Si20-701_B Troubleshooting by Remote Controller3523.85U0 Refrigerant ShortageRemote Controller DisplayU0Applicable ModelsRZQ-K/H, RZQ(S)-BMethod of Er

Symptom-based Troubleshooting Si20-701_B292. Symptom-based Troubleshooting2.1 OverviewSymptom Details of Measures1 Equipment does not operate. Refer t

Troubleshooting by Remote Controller Si20-701_B353Troubleshooting Refer to P.475. Refer to P.477.Is the stop valve open?NOYESOpen the stop valve.Is th

Si20-701_B Troubleshooting by Remote Controller354Remote Controller DisplayU0Applicable ModelsRZQ(S)-CMethod of Error Detection(In cooling operation)D

Troubleshooting by Remote Controller Si20-701_B355Supposed Causes Refrigerant shortage Clogged refrigerant piping system  Mismatching of wiring and

Si20-701_B Troubleshooting by Remote Controller356Remote Controller DisplayU0Applicable ModelsRZR71KUV1, RZQGMethod of Error Detection(In cooling oper

Troubleshooting by Remote Controller Si20-701_B357Troubleshooting Refer to P.477. Refer to P.478.Is the refrigerant level proper?NOYESCollect refriger

Si20-701_B Troubleshooting by Remote Controller3583.86U1 Reverse PhaseRemote Controller DisplayU1Applicable ModelsRY-F, R(Y)-G/GA/KU(3-phase equipment

Troubleshooting by Remote Controller Si20-701_B359Remote Controller DisplayU1Applicable ModelR(Y)-LU, RR-M, RZQ-C7Method of Error DetectionThe reverse

Si20-701_B Troubleshooting by Remote Controller360Remote Controller DisplayU1Applicable ModelsCMSQMethod of Error DetectionThe phase of each phase are

Troubleshooting by Remote Controller Si20-701_B3613.87U2 Insufficient VoltageRemote Controller DisplayU2Applicable ModelsRZ(Y)Method of Error Detectio

Si20-701_B Troubleshooting by Remote Controller362TroubleshootingNote:∗1. K1M replacement possible in RZY100/125L.∗2. For RZY71: Between terminals P1

Si20-701_B Symptom-based Troubleshooting3016Indoor unit fan operates in “L” tap for 1 minute in “program dry” mode even if compressor is not operating

Troubleshooting by Remote Controller Si20-701_B3633.88U2 Power Supply Voltage AbnormalityRemote Controller DisplayU2Applicable ModelsRZQ-K/H, RZQ(S)-B

Si20-701_B Troubleshooting by Remote Controller364TroubleshootingCheck LED on outdoor unit PCB. (Is the voltage insufficient?)NOYESYESExternal factorI

Troubleshooting by Remote Controller Si20-701_B3653.89U2 Power Supply Insufficient or Instantaneous FailureRemote Controller DisplayU2Applicable Model

Si20-701_B Troubleshooting by Remote Controller366TroubleshootingADisconnect the cable from the compressor, and then check the compressor for the insu

Troubleshooting by Remote Controller Si20-701_B367AReplace the fan motor.Replace the fan driver.Check the inverter power transistor.NOThe insulation r

Si20-701_B Troubleshooting by Remote Controller368Has the power transistor got defective?Replace the fan driver PCB.∗Observe the conditions of the PCB

Troubleshooting by Remote Controller Si20-701_B369NONONOYESYESYESRecheck for the power supply. If there is no problem with the power supply, replace t

Si20-701_B Troubleshooting by Remote Controller3703.90U2 Power Supply Voltage AbnormalityRemote Controller DisplayU2Applicable ModelsRZQGMethod of Err

Troubleshooting by Remote Controller Si20-701_B371Troubleshooting Refer to P.460.Is the resistance valve is above the criteria?"U2" is displ

Si20-701_B Troubleshooting by Remote Controller372NOYESMonitor the voltage (Instantaneous voltage drop)Replace the outdoor unit PCB.Is the measured vo

Symptom-based Troubleshooting Si20-701_B312.2 Equipment does not OperateApplicable ModelAll models of SkyAir seriesSupposed Causes Fuse blown or diso

Troubleshooting by Remote Controller Si20-701_B3733.91U3 Check Operation is not ExecutedRemote Controller DisplayU3Applicable ModelsCMSQMethod of Erro

Si20-701_B Troubleshooting by Remote Controller374TroubleshootingHas the check operation performed on outdoor unit PCB?NOYESPress and hold BS4 on the

Troubleshooting by Remote Controller Si20-701_B3753.92U4 or UF Transmission Error (Between Indoor Unit and Outdoor Unit)Remote Controller DisplayU4 or

Si20-701_B Troubleshooting by Remote Controller376TroubleshootingDiagnosis of incorrect or broken/disconnected wiringIf the LEDs on the indoor unit PC

Troubleshooting by Remote Controller Si20-701_B377NO (ON or OFF)YESYESCheck of outdoor unit error detection LED.Is the red LED OFF?YESReplace the indo

Si20-701_B Troubleshooting by Remote Controller378Remote Controller DisplayU4 or UFApplicable ModelsRY-F, R(Y)-G/GA/KU/LU/NU/PU, RR-MMethod of Error D

Troubleshooting by Remote Controller Si20-701_B379NO (ON or OFF)YESYESYESYESNONOReplace the indoor unit PCB.Replace the indoor unit PCB or correct pow

Si20-701_B Troubleshooting by Remote Controller380NO (ON or OFF)NOYESYESReplace the indoor unit PCB.External factor (Noise, etc.)."U4" displ

Troubleshooting by Remote Controller Si20-701_B3813.93U4 Transmission Error Between Indoor Unit and Outdoor UnitRemote Controller DisplayU4Applicable

Si20-701_B Troubleshooting by Remote Controller382TroubleshootingDiagnosis of incorrect or broken/disconnected wiringIf the LEDs on the indoor unit PC

Si20-701_B Symptom-based Troubleshooting32TroubleshootingYESNOYESNOWait until power returns.Is the power switch OFF or fuse for power switch blown?Tur

Troubleshooting by Remote Controller Si20-701_B383NO (ON or OFF)NOYESYESReplace the indoor unit PCB.Resets normally. External factor (Noise, etc.).Is

Si20-701_B Troubleshooting by Remote Controller384Remote Controller DisplayU4Applicable ModelsRZQ-K/H, RZR-KU/HUError Decision ConditionsThe error is

Troubleshooting by Remote Controller Si20-701_B385Note:∗1. Optional accessories refer to wire adaptor, auto grill and other accessories.NOIs HAP on th

Si20-701_B Troubleshooting by Remote Controller386 Refer to P.482.YESYESIs the output voltage normal?YESNOReplace the fuse.Is the resistance value of

Troubleshooting by Remote Controller Si20-701_B387NONODoes error"U4" or "UF" reoccur?YESReplace the outdoor unit inverter PCB.YESR

Si20-701_B Troubleshooting by Remote Controller388Remote Controller DisplayU4Applicable ModelsFMCQ, FMDQ-A7/B7CMSQMethod of Error DetectionMicro-compu

Troubleshooting by Remote Controller Si20-701_B389TroubleshootingYESYESNONOYESNONOHas the indoor or outdoor unit PCB been replaced, or has the indoor

Si20-701_B Troubleshooting by Remote Controller390Is indoor - outdoor and outdoor - outdoor unit transmission wiring normal?Lamp does not go OFF for 1

Troubleshooting by Remote Controller Si20-701_B391Remote Controller DisplayU4 or UFApplicable ModelsRZQ(S)-B/CError Decision ConditionsThe error is ge

Si20-701_B Troubleshooting by Remote Controller392TroubleshootingDiagnosis of incorrect or broken/disconnected wiring. If the LEDs on the indoor unit

SkyAir Series Si20-701_Biii3.44H7 Outdoor Unit Fan Motor SignalAbnormality ...2353.45H9, J3, J5, J6

Symptom-based Troubleshooting Si20-701_B332.3 Indoor Unit Fan Operates, but Compressor does not OperateApplicable ModelAll models of SkyAir seriesSupp

Troubleshooting by Remote Controller Si20-701_B393Is HAP on the outdoor unit PCB blinking? (Outdoor unit PCB)Is the power for the optional accessory s

Si20-701_B Troubleshooting by Remote Controller394Note:∗1 Optional accessories refer to wire adaptor, auto grill and other accessories.∗2 RZQ71B9V3B⇒N

Troubleshooting by Remote Controller Si20-701_B395NONODoes "U4" or "UF" reoccur?YES RZQ71B9, RZQS71·100B7 (1φ), RZQ100~140B8 (3φ)

Si20-701_B Troubleshooting by Remote Controller396Remote Controller DisplayU4Applicable ModelsRZQ-C7Method of Error DetectionMicro-computer checks if

Troubleshooting by Remote Controller Si20-701_B397TroubleshootingDiagnosis of incorrect or broken/disconnected wiringIf the LEDs on the indoor unit PC

Si20-701_B Troubleshooting by Remote Controller398Does the resistance meet the criteria?Is HAP blinking?(Outdoor unit PCB)Turn OFF the power supply an

Troubleshooting by Remote Controller Si20-701_B399B"U4" is displayed continuously.NOYESReplace the indoor unit PCB.It is normal.Check for ex

Si20-701_B Troubleshooting by Remote Controller400Remote Controller DisplayU4Applicable ModelsRZQGMethod of Error DetectionThe error is generated when

Troubleshooting by Remote Controller Si20-701_B401TroubleshootingIs there wrong wiring, a wrong wire type, loose terminal or contact failure in the tr

Si20-701_B Troubleshooting by Remote Controller402Note:∗1 ON for 0.2 second and OFF for 0.2 second (Blink about 25 times for 10 seconds)(Normally, ON

Si20-701_B Symptom-based Troubleshooting34TroubleshootingYESNOTurn ON the power switch or replace the fuse.YESNONormal.(Thermostat OFF by outdoor air

Troubleshooting by Remote Controller Si20-701_B403YESYESNONONOMake the fuse normal.• In case of a fuse can be replaced, replace the fuse.• In case of

Si20-701_B Troubleshooting by Remote Controller4043.94U5 Transmission Error Between Indoor Unit and Remote ControllerRemote Controller DisplayU5Applic

Troubleshooting by Remote Controller Si20-701_B405TroubleshootingYESNONOYESNONOYESControl by 2 remote controllersAll indoor unit PCB micro-computer no

Si20-701_B Troubleshooting by Remote Controller406Remote Controller DisplayU5Applicable ModelsRZ(Y)Method of Error DetectionMicro-computer checks if t

Troubleshooting by Remote Controller Si20-701_B407TroubleshootingYESNONOYESNOYESControl by 2 remote controllersAll indoor unit PCB micro-computer nor

Si20-701_B Troubleshooting by Remote Controller408Remote Controller DisplayU5Applicable ModelsRZQ-K/H, RZQ(S)-B/C, RZR-KU/HUMethod of Error DetectionM

Troubleshooting by Remote Controller Si20-701_B409TroubleshootingYESYESNONOYESNOYESControl by 2 remote controllersAll indoor unit PCB micro-computer

Si20-701_B Troubleshooting by Remote Controller410Remote Controller DisplayU5Applicable ModelsRZQ-C7, RZQG, CMSQMethod of Error DetectionThe error is

Troubleshooting by Remote Controller Si20-701_B411TroubleshootingAll indoor PCB micro-computer monitors blink.Using 2-remote controllers control.NONOR

Si20-701_B Troubleshooting by Remote Controller4123.95U7 Transmission Error Between Outdoor UnitsRemote Controller DisplayU7Applicable ModelsCMSQMetho

Symptom-based Troubleshooting Si20-701_B35cOutput from CompressorIndoor unit PCBOutdoor unit PCBCOMP.Magnetic switch or power transistorSuction air th

Troubleshooting by Remote Controller Si20-701_B413TroubleshootingCool / heat selection is unified.Is there any broken wire or erroneous wire connectio

Si20-701_B Troubleshooting by Remote Controller414External control adaptor for outdoor unit•Is this PCB energized?•Does the cool/heat unified address

Troubleshooting by Remote Controller Si20-701_B4153.96U8 Transmission Error Between Main Remote Controller and Sub Remote ControllerRemote Controller

Si20-701_B Troubleshooting by Remote Controller416TroubleshootingYESNONOControlling with 2-remote controllerBoth SS-1 switches on remote controllers a

Troubleshooting by Remote Controller Si20-701_B417Remote Controller DisplayU8Applicable ModelsRZ(Y)Method of Error DetectionIn case of controlling wit

Si20-701_B Troubleshooting by Remote Controller418TroubleshootingYESNONOControlling with 2-remote controllerBoth SS-1 switches on remote controllers a

Troubleshooting by Remote Controller Si20-701_B419Remote Controller DisplayU8Applicable ModelsRZQ-K/H, RZQ(S)-B/C, RZQG, RZR-KU/HUMethod of Error Dete

Si20-701_B Troubleshooting by Remote Controller420TroubleshootingControlling with 2-remote controllerNOYESYESNONOBoth SS-1 switches on remote controll

Troubleshooting by Remote Controller Si20-701_B4213.97U9 Transmission Error Between Indoor and Outdoor Units in the Same SystemRemote Controller Displ

Si20-701_B Troubleshooting by Remote Controller422TroubleshootingNONOHave 2 minutes and over passed since the "U9"code was indicated?Start o

Si20-701_B Symptom-based Troubleshooting362.4 Cooling / Heating Operation Starts but Stops ImmediatelyApplicable ModelAll models of SkyAir seriesSuppo

Troubleshooting by Remote Controller Si20-701_B423NOGo on to the "U4" troubleshootingGo on to the "U5" troubleshootingYESThe "

Si20-701_B Troubleshooting by Remote Controller4243.98UA Defective Field Setting SwitchRemote Controller DisplayUAApplicable ModelsRY-F, R(Y)-G/GA/KU/

Troubleshooting by Remote Controller Si20-701_B425TroubleshootingYESNOYESNOIs the remote controller connected to more than 1 indoor unit?Connect the r

Si20-701_B Troubleshooting by Remote Controller426YESYESNOAre the transmission normal monitors (HBP) of all indoor unit PCB blinking?Operating normall

Troubleshooting by Remote Controller Si20-701_B4273.99UA Improper Combination of Indoor and Outdoor Units, Indoor Units and Remote ControllerRemote Co

Si20-701_B Troubleshooting by Remote Controller428TroubleshootingNote:∗1 The number of indoor units that can be connected to a single outdoor unit sys

Troubleshooting by Remote Controller Si20-701_B429YESYESYESIs it a multi outdoor unit connection system?Is the combination of master unit and slave un

Si20-701_B Troubleshooting by Remote Controller4303.100UA Field Setting Switch AbnormalityRemote Controller DisplayUAApplicable ModelsRZQ-K/H, RZQ(S)-

Troubleshooting by Remote Controller Si20-701_B431TroubleshootingNote:∗1. Only for pair/twin/triple/double twinYESNOYESNOIs the remote controller conn

Si20-701_B Troubleshooting by Remote Controller432YESNOOperating normally?NOYESConnect correctly.Replace the indoor unit PCB.Is the indoor-indoor and

Symptom-based Troubleshooting Si20-701_B37TroubleshootingIs the heat exchanger soiled?Is there any interfering item in airflow?Is the filter soiled?Do

Troubleshooting by Remote Controller Si20-701_B4333.101UA Field Setting Switch and Transmission Line AbnormalityRemote Controller DisplayUAApplicable

Si20-701_B Troubleshooting by Remote Controller434TroubleshootingNOYESIs the outdoor unit simultaneous ON/OFF multi of the indoor unit?RZQ-C series or

Troubleshooting by Remote Controller Si20-701_B435YESYESYESYESAre the wires between indoor-indoor and indoor-outdoor correctly connected?Is the power

Si20-701_B Troubleshooting by Remote Controller436YESYESNOConnect correctly.BDoes the system conduct normal operation?Are the wires between indoor-ind

Troubleshooting by Remote Controller Si20-701_B4373.102UC Centralized Address Setting ErrorRemote Controller DisplayUCApplicable ModelsRZQ-K/H, RZQ(S)

Si20-701_B Troubleshooting by Remote Controller4383.103UC Address Duplication of Centralized ControllerRemote Controller DisplayUCApplicable ModelsCMS

Troubleshooting by Remote Controller Si20-701_B4393.104UE Transmission Error between Centralized Controller and Indoor UnitRemote Controller DisplayUE

Si20-701_B Troubleshooting by Remote Controller440TroubleshootingYESNOYESYESCheck the indoor unit for which “UE” is displayed. Is the transmission err

Troubleshooting by Remote Controller Si20-701_B441YESReset the power supplies of every centralized controller.For the intelligent Touch Controller, re

Si20-701_B Troubleshooting by Remote Controller442 Refer to P.492.AbnormalNormalCorrect the wiring.AbnormalCorrect the wiring.NOCorrect the connection

Si20-701_B Symptom-based Troubleshooting382.5 After Unit Shuts Down, It cannot be Restarted for a WhileApplicable ModelAll models of SkyAir seriesSupp

Troubleshooting by Remote Controller Si20-701_B443YESNOReplace the centralized controller.Centralized controller: NormalIt is supposed that the error

Si20-701_B Troubleshooting by Remote Controller444Remote Controller DisplayUEApplicable ModelsCentralized remote controllerSchedule timerAll models of

Troubleshooting by Remote Controller Si20-701_B445TroubleshootingHas an indoor unit once connected been removed or its address changed?Is the power su

Si20-701_B Troubleshooting by Remote Controller446Is the centralized controller's connector for setting centralized controller disconnected?YESCo

Troubleshooting by Remote Controller Si20-701_B4473.105UF Mis-connection of Field WiringRemote Controller DisplayUFApplicable ModelsCooling Only model

Si20-701_B Troubleshooting by Remote Controller4483.106UF System is not Set yetRemote Controller DisplayUFApplicable ModelsFMCQ, FMDQ-A7/B7CMSQMethod

Troubleshooting by Remote Controller Si20-701_B449TroubleshootingNote:Wiring check operation may not be successful if carried out after the outdoor un

Si20-701_B Troubleshooting by Remote Controller4503.107UF Transmission Error between Indoor and Outdoor Unit / Piping and Wiring Mismatch / Refrigeran

Troubleshooting by Remote Controller Si20-701_B451Supposed Causes Defective transmission wiring between the indoor and outdoor units Mismatching of

Si20-701_B Troubleshooting by Remote Controller452Note:∗1 ON for 0.2 second and OFF for 0.2 second (Blink about 25 times for 10 seconds)(Normally, ON

Symptom-based Troubleshooting Si20-701_B39TroubleshootingIs the discharge side of compressor hot after the unit stops?Does the unit start operation af

Troubleshooting by Remote Controller Si20-701_B453Remote Controller DisplayUFApplicable ModelsRZQ(S)-B/CMethod of Error DetectionCheck the transmissio

Si20-701_B Troubleshooting by Remote Controller454Troubleshooting Refer to P.477. Refer to P.478.Does "UF" appear when the power is turned O

Troubleshooting by Remote Controller Si20-701_B4553.108UF Transmission System Abnormality (between Indoor and Outdoor Units)Remote Controller DisplayU

Si20-701_B Troubleshooting by Remote Controller4563.109UH System Error, Refrigerant System Address UndefinedRemote Controller DisplayUHApplicable Mode

Troubleshooting by Remote Controller Si20-701_B457TroubleshootingYESYESIs electricity being introduce for the first time after installation or after a

Si20-701_B Troubleshooting by Remote Controller458Note:∗1: Check the correct indoor-outdoor unit transmission wiring and outdoor-outdoor unit transmis

Troubleshooting by Remote Controller Si20-701_B4593.110 CheckCheck for Fan Motor Connector (Signal Line)(1) Turn the power supply OFF.For except FBQ(2

Si20-701_B Troubleshooting by Remote Controller460Check for Fan Motor Connector (Power Supply Line)(1) Turn the power supply OFF.With the relay connec

Troubleshooting by Remote Controller Si20-701_B461Thermistor Resistance / Temperature CharacteristicsFor radiation fin thermistorT°C kΩ T°C kΩ-30 354.

Si20-701_B Troubleshooting by Remote Controller462For outdoor air thermistorFor suction pipe thermistorFor heat exchanger thermistorFor intermediate h

Si20-701_B Symptom-based Troubleshooting40Is there any temperature difference between suction side and discharge side of four way valve?Is there any t

Troubleshooting by Remote Controller Si20-701_B463For discharge pipe thermistorT°C kΩ T°C kΩ-30 3257.371 65 41.4168-25 2429.222 70 34.7923-20 1827.883

Si20-701_B Troubleshooting by Remote Controller464Evaluation of Abnormal High PressureAbnormally high pressure level is mostly caused by the condenser

Troubleshooting by Remote Controller Si20-701_B465In heating operationCheck items (Possible causes) JudgementDoes the indoor unit fan run normally?Vis

Si20-701_B Troubleshooting by Remote Controller466Evaluation of Abnormal Low PressureAbnormally low pressure level is mostly caused by the evaporator

Troubleshooting by Remote Controller Si20-701_B467In heating operationCheck items (Possible causes) JudgementDoes the outdoor unit fan run normally?

Si20-701_B Troubleshooting by Remote Controller468Check for Power TransistorJudgement is made through cable check with an analog tester.(1) Do not tou

Troubleshooting by Remote Controller Si20-701_B469(6) Using an analog tester, measure resistance and fill in the blanks in the following table.In case

Si20-701_B Troubleshooting by Remote Controller470Voltage Measuring MethodCHECK 7Outdoor unit PCBPressure sensorMicro-computer A/D inputGND+5VConnecto

Troubleshooting by Remote Controller Si20-701_B471Pressure Sensor for except RZQ(S)-B, RZQ-C7 and CMSQPH = 1.38VH-0.69PH : High pressure (MPa)VH : Out

Si20-701_B Troubleshooting by Remote Controller472Pressure Sensor for RZQ(S)-B, RZQ-C7 and CMSQHigh Pressure (PH)Low Pressure (PL)PH = 1.38VH-0.69PL =

Symptom-based Troubleshooting Si20-701_B412.6 Equipment Operates but does not Provide CoolingApplicable ModelAll models of SkyAir seriesSupposed Cause

Troubleshooting by Remote Controller Si20-701_B473Electronic Expansion Valve Connector and Coil Resistance CriteriaMeasurement pointCriteria1 - 540~50

Si20-701_B Troubleshooting by Remote Controller474Check for Factors Causing Wet OperationReferring to the Fault Tree Analysis (FTA) shown below, ident

Troubleshooting by Remote Controller Si20-701_B475Check for Excessive Refrigerant ChargingAs criteria for judging whether refrigerant is excessively c

Si20-701_B Troubleshooting by Remote Controller476CoolingAdequate levelCompressor frequency increases in order to maintain low pressure.Compressor fr

Troubleshooting by Remote Controller Si20-701_B477Check for Clogged PointsTemperature differences must occur before or after the clogged points!Check

Si20-701_B Troubleshooting by Remote Controller478Check for Inadequate RefrigerantAs criteria for judging whether refrigerant is inadequate or not, re

Troubleshooting by Remote Controller Si20-701_B479Refrigerant shortage warningAs compressor frequency decreases, high pressure decreases.(Maintains a

Si20-701_B Troubleshooting by Remote Controller480<Diagnosis of inadequate refrigerant>In heating operation(1) As suction superheated degree inc

Troubleshooting by Remote Controller Si20-701_B481(Maintains a certain level of high pressure)High pressureLow pressureSuction superheated degreeCompr

Si20-701_B Troubleshooting by Remote Controller482Fan Motor Pulse Check(1) Set operation OFF and power OFF. Disconnect the connector.(2) Check that th

Si20-701_B Symptom-based Troubleshooting42TroubleshootingYESNONOYESTemperature difference for cooling should be between 8 and 18˚C.Normal.Additional u

Troubleshooting by Remote Controller Si20-701_B483Check for causes of rise in high pressureReferring to the Fault Tree Analysis (FTA) shown below, pro

Si20-701_B Troubleshooting by Remote Controller484Note:∗1. In cooling, it is normal if the outdoor unit electronic expansion valve (EVM) is fully open

Troubleshooting by Remote Controller Si20-701_B485 Check for causes of drop in low pressureReferring to the Fault Tree Analysis (FTA) shown below, pro

Si20-701_B Troubleshooting by Remote Controller486[In cooling][In heating]Defective suction air thermistor of indoor unitDefective outdoor air tempera

Troubleshooting by Remote Controller Si20-701_B487Note:∗1. For details of compressor capacity control while in cooling, refer to “Compressor PI contro

Si20-701_B Troubleshooting by Remote Controller488Method of Checking the Inverter’s Power Transistors and Diode ModulesChecking failures in power semi

Troubleshooting by Remote Controller Si20-701_B489Electronic circuit According to the checking aforementioned, it is probed that the error results fr

Si20-701_B Troubleshooting by Remote Controller4901. Power module checkingWhen using the analog type of multiple tester, make measurement in resistanc

Troubleshooting by Remote Controller Si20-701_B4912. Diode module checkingWhen using the analog type of multiple tester, make measurement in resistanc

Si20-701_B Troubleshooting by Remote Controller492 Broken Wire Check of the Connecting Wires1. Procedure for checking outdoor-outdoor unit transmissio

Si20-701_B SkyAir Seriesiv3.73LC Transmission Error(between Control PCB and Inverter PCB) ...3233.74P1 Inverter Over-Ripple Protection ...

Symptom-based Troubleshooting Si20-701_B43Is the level of high pressure higher than normal level?YESNOCheck the each item.• Refrigerant overcharge• Ai

Troubleshooting by Remote Controller Si20-701_B493and F2 of the "Indoor Unit a" that is farthest from the "Outdoor Unit C" using a

WarningJMI-0107JQA-1452z Daikin products are manufactured for export to numerous countries throughout the world. Prior to purchase, please confirm wit

Si20-701_B Symptom-based Troubleshooting442.7 Equipment Operates but does not Provide HeatingApplicable ModelAll models of SkyAir seriesSupposed Cause

Symptom-based Troubleshooting Si20-701_B45TroubleshootingYESNOIs the unit in defrost mode?Wait for a while.NormalYESNONONormalAdditional unit installa

Si20-701_B Symptom-based Troubleshooting46Is the level of low pressure lower than normal level?YESNOCheck the each item.• Refrigerant overcharge• Soil

Symptom-based Troubleshooting Si20-701_B472.8 Equipment Discharges White MistApplicable ModelAll models of SkyAir seriesSupposed Causes Humid install

Si20-701_B Symptom-based Troubleshooting48TroubleshootingYESYESIs the room temperature higher than set value in cooling?YESCleaning of heat exchanger

Symptom-based Troubleshooting Si20-701_B492.9 Equipment Produces Loud Noise or VibrationApplicable ModelAll models of SkyAir seriesSupposed Causes Im

Si20-701_B Symptom-based Troubleshooting50TroubleshootingYESYESNONOInsert shock absorber in mounting section, or strengthen the mounting section.Does

Symptom-based Troubleshooting Si20-701_B51YESYESNONormal.The noise is a sound generated at the time of refrigerant flow change or stop.Continuous slig

Si20-701_B Symptom-based Troubleshooting522.10 Equipment Discharges DustApplicable ModelAll models of SkyAir seriesSupposed Causes Carpet Animal hai

SkyAir Series Si20-701_Bv3.99UA Improper Combination of Indoor andOutdoor Units, Indoor Units andRemote Controller ...

Symptom-based Troubleshooting Si20-701_B532.11 Remote Controller LCD Displays "88"Applicable ModelAll models of SkyAir seriesTroubleshooting

Si20-701_B Troubleshooting by Remote Controller543. Troubleshooting by Remote Controller3.1 Procedure of Self-diagnosis by Remote Controller3.1.1 Wire

Troubleshooting by Remote Controller Si20-701_B553.1.2 Wired Remote Controller — BRC1E61The following will be displayed on the screen when an error (o

Si20-701_B Troubleshooting by Remote Controller56(2)Taking corrective action· Press the Menu/Enter button to check the error code.· Take the correctiv

Troubleshooting by Remote Controller Si20-701_B571Press the INSPECTION/TEST button to select “inspection”. The equipment enters the inspection mode. T

Si20-701_B Troubleshooting by Remote Controller58Normal statusEnters inspection mode from normal status when the INSPECTION/TEST button is pressed.1 P

Troubleshooting by Remote Controller Si20-701_B593.2 Error Codes and Description3.2.1 Indoor Unit∗1 For only FAY∗2 For only FHYError CodeContents of E

Si20-701_B Troubleshooting by Remote Controller60∗1 For except FHQG∗2 For except FVG∗3 For only FCQ∗4 For only FCQH∗5 For only FCQG∗6 For except FVQEr

Troubleshooting by Remote Controller Si20-701_B61∗1 For except FHQG∗2 For except FVG∗3 For only FCQ∗4 For only FCQH∗5 For only FCQG∗6 For except FVQEr

Si20-701_B Troubleshooting by Remote Controller623.2.2 Outdoor Unit, SystemNON-Inverter SeriesError CodeContents of ErrorSeries NameReference PageRY-F

Si20-701_B SkyAir Seriesvi

Troubleshooting by Remote Controller Si20-701_B63PJDefective Capacity Settinghh 336U0 Refrigerant Shortage hhhhh 347U1Reverse Phase hhh 358Reverse Pha

Si20-701_B Troubleshooting by Remote Controller64Inverter Series∗1 For only RZQ-K ∗4 For only RZQ(S)-C∗2 For only RZQ-H ∗5 For only RZQ(S)-B∗3 For onl

Troubleshooting by Remote Controller Si20-701_B65∗1 For only RZQ-K ∗4 For only RZQ(S)-C∗2 For only RZQ-H ∗5 For only RZQ(S)-B∗3 For only RZQ-KU ∗6 For

Si20-701_B Troubleshooting by Remote Controller66∗1 For only RZQ-K ∗4 For only RZQ(S)-C∗2 For only RZQ-H ∗5 For only RZQ(S)-B∗3 For only RZQ-KU ∗6 For

Troubleshooting by Remote Controller Si20-701_B67∗1 For only RZQ-K ∗4 For only RZQ(S)-C∗2 For only RZQ-H ∗5 For only RZQ(S)-B∗3 For only RZQ-KU ∗6 For

Si20-701_B Troubleshooting by Remote Controller68∗1 For only RZQ-K ∗4 For only RZQ(S)-C∗2 For only RZQ-H ∗5 For only RZQ(S)-B∗3 For only RZQ-KU ∗6 For

Troubleshooting by Remote Controller Si20-701_B69∗1 For only RZQ-K ∗4 For only RZQ(S)-C∗2 For only RZQ-H ∗5 For only RZQ(S)-B∗3 For only RZQ-KU ∗6 For

Si20-701_B Troubleshooting by Remote Controller70∗1 For only RZQ-K ∗4 For only RZQ(S)-C∗2 For only RZQ-H ∗5 For only RZQ(S)-B∗3 For only RZQ-KU ∗6 For

Troubleshooting by Remote Controller Si20-701_B71∗1 For only RZQ-K ∗4 For only RZQ(S)-C∗2 For only RZQ-H ∗5 For only RZQ(S)-B∗3 For only RZQ-KU ∗6 For

Si20-701_B Troubleshooting by Remote Controller72∗1 For only RZQ-K ∗4 For only RZQ(S)-C∗2 For only RZQ-H ∗5 For only RZQ(S)-B∗3 For only RZQ-KU ∗6 For

List of Applicable Models Si20-701_B11. List of Applicable Models R-FU SeriesSeries Outdoor Units Indoor UnitsR-FUV1R71FUV1 FA71FVEKR100FUV1 FA100FVE

Troubleshooting by Remote Controller Si20-701_B733.3 Detailed Error Codes3.3.1 Indoor UnitError codeTroubleshootingDescription of error Description of

Si20-701_B Troubleshooting by Remote Controller743.3.2 Outdoor UnitAH - 07 Damper rotation error [when the self-cleaning decoration panel is mount

Troubleshooting by Remote Controller Si20-701_B75L8 - 01 Electronic thermal 1 error Overload current continues for a period of 260 seconds or more

Si20-701_B Troubleshooting by Remote Controller76L9 - 02 Stall prevention (startup error) The compressor has not completed startup operation. This

Troubleshooting by Remote Controller Si20-701_B77U0 - 03 Refrigerant shortage - Outdoor unit (Factor 1)This error results from a refrigerant short

Si20-701_B Troubleshooting by Remote Controller78UA - 05 Indoor-Outdoor transmission error between slave 1 and outdoor unitThere is an error in tr

Troubleshooting by Remote Controller Si20-701_B793.4A0 Error of External Protection DeviceRemote Controller DisplayA0Applicable ModelsFCQ, FMCQMethod

Si20-701_B Troubleshooting by Remote Controller80TroubleshootingYESNONOExternal protection device is connected to terminals T1 and T2 of the indoor un

Troubleshooting by Remote Controller Si20-701_B813.5A1 Indoor Unit PCB AbnormalityRemote Controller DisplayA1Applicable ModelsAll indoor modelsMethod

Si20-701_B Troubleshooting by Remote Controller82TroubleshootingYESReplace the indoor unit PCB.The error may be caused by an external factor, rather t

Si20-701_B List of Applicable Models2 R-GA Series R-G SeriesSeries Outdoor Units Indoor UnitsR-GAVR50GAV1A FH50BVER60GAV1A FH60BVESeries Outdoor Uni

Troubleshooting by Remote Controller Si20-701_B833.6A3 Drain Water Level System AbnormalityRemote Controller DisplayA3Applicable ModelsFH(Y)C, FH(Y)K,

Si20-701_B Troubleshooting by Remote Controller84TroubleshootingNONONOYESYESYESNOIs a drain pump connected to the indoor unit PCB?Is the unit a casset

Troubleshooting by Remote Controller Si20-701_B85Note:If "A3" is detected by a PCB without X15A, the PCB is defective.Error displayed again?

Si20-701_B Troubleshooting by Remote Controller863.7A6 Indoor Unit Fan Motor AbnormalityRemote Controller DisplayA6Applicable ModelsFH(Y), FAY, FUY, F

Troubleshooting by Remote Controller Si20-701_B87TroubleshootingAre fan motor connectors properly connected?NOYESConnect correctly.With connectors unp

Si20-701_B Troubleshooting by Remote Controller88Remote Controller DisplayA6Applicable ModelsFCQ, FHQ, FAQMethod of Error DetectionDetection of abnorm

Troubleshooting by Remote Controller Si20-701_B89Troubleshooting Refer to P.459.Is there any foreign matter around the fan?YESNORemove the foreign mat

Si20-701_B Troubleshooting by Remote Controller90Remote Controller DisplayA6Applicable ModelsFBQMethod of Error Detection Detection from the current

Troubleshooting by Remote Controller Si20-701_B91TroubleshootingYESThere is a foreign matter around the fan.YESNORemove the foreign matter.The fan mot

Si20-701_B Troubleshooting by Remote Controller92 Refer to P.460.The resistance between the power wire terminals of the fan motor and motor frame (mea