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Model reference

Daikin FFQ15Q2VJU

Air Conditioner

1 document57 error codes29 service modes

Available documentation

Service Manual

  • Service Manual Multi-Split Type Air Conditioners RMXS-L Series299 pg
    Covers this model
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Error codes (57)

CodeMeaning
A1Indoor unit PCB abnormalityA3Drain level control system abnormalityA5Freeze-up protection control or heating peak-cut control activated due to…A6Indoor fan motor (DC motor) or related abnormalityA9Electronic expansion valve abnormality in BP unitAFHumidifier or related abnormalityC4Indoor heat exchanger thermistor 1 (liquid pipe) (R2T) or related abnormalityC5Indoor heat exchanger thermistor 2 (R3T) or related abnormalityC7Front panel open/close fault on CTXG series.C9Room temperature thermistor (R1T) or related abnormalityCEPresence sensor or floor sensor abnormalityCJRemote controller thermistor abnormalityE1Outdoor unit PCB abnormalityE2Branch provider (BP) unit PCB abnormalityE3Actuation of high pressure switchE4Actuation of low pressure sensorE5OL activation (compressor overload)E6Compressor lockE7DC fan lock (outdoor fan motor)E8Input overcurrent detectionE9Moving part of electronic expansion valve (Y1E or Y3E) abnormalityEAFour way valve abnormalityF3Discharge pipe temperature controlF6High pressure control in coolingF8System shutdown due to compressor internal temperature abnormalityH0Compressor system sensor abnormalityH6Position sensor abnormalityH9Outdoor temperature thermistor or related abnormalityJ0Branch provider (BP) liquid or gas pipe thermistor abnormalityJ3Discharge pipe thermistor or related abnormality
View all 57 error codes
J5Suction pipe thermistor (R3T or R5T) abnormalityJ6Outdoor heat exchanger thermistor or related abnormalityJ7Outdoor liquid pipe thermistor (R7T) abnormalityJ9Subcooling heat exchanger gas pipe thermistor (R6T) abnormalityJAHigh pressure sensor abnormalityJCLow pressure sensor abnormalityL1Outdoor unit PCB abnormalityL3Electrical box temperature riseL4Radiation fin temperature riseL5Output overcurrent detectionL8Inverter current abnormalityL9Compressor start-up errorP1High voltage of capacitor in main inverter circuitP4Radiation fin thermistor or related abnormality.U0Low pressure drop due to refrigerant shortage or electronic expansion valve…U2Low-voltage detection or over-voltage detectionU3Check operation has not been conductedU4Signal transmission error between indoor unit and outdoor unitU5Signal transmission error between indoor unit and remote controllerU8Signal transmission error between MAIN remote controller and SUB remote…U9Signal transmission error between indoor unit and outdoor unit in the same…UAMismatching of indoor unit and outdoor unitUCAddress duplication of central remote controller.UETransmission error between centralized remote controller and indoor unit.UFSystem is not set yetUHSystem abnormality, refrigerant system address undefinedUJTransmission error between outdoor unit and branch provider (BP) unit

Service modes (29)

  • Check Operation (Outdoor Unit)["Press and hold TEST (BS4) button on outdoor unit service PCB for 5 seconds","Test operation…
  • Field Setting Mode (FFQ - Wireless Remote)["From normal mode, hold INSPECTION/TEST button for at least 4 seconds to enter Field Set…
  • Field Setting Mode (Wireless Remote Controller)["From normal mode, hold down INSPECTION/TEST OPERATION button for at least 4 seconds to enter…
  • Field Settings (Wired Remote Controller BRC1E73)["Press and hold Cancel button for 4 seconds or longer
  • Forced Cooling Operation (Wired Remote Controller BRC1E73)["Set to COOL operation using the remote controller.","Press and hold Cancel button for 4 seconds…
  • Forced Cooling Operation (Wireless Remote Controller)["Press OPERATION MODE SELECTOR button and select COOL operation.","Press INSPECTION/TEST OPERATION…
  • Inspection Mode (Wireless Remote Controller)["Press INSPECTION/TEST OPERATION button once to enter inspection mode
  • Monitor Mode (Outdoor Unit)["From Setting Mode 1, press MODE (BS1) button once","H1P LED blinks","Press SET (BS2) button to…
  • Power Transistor Check Mode (Outdoor Unit)["In Setting Mode 2, select item No
  • Power Transistor Test Operation (Wired Remote Controller BRC1E73)["Turn the power on.","Set FAN operation using the remote controller.","Press and hold Cancel…
  • Power Transistor Test Operation (Wireless Remote Controller)["Turn the power on.","Press OPERATION MODE SELECTOR button and select FAN operation.","Press…
  • Refrigerant Additional Charging Operation["Turn ON power of indoor and outdoor units","Completely open gas-side and liquid-side stop…
  • Refrigerant Recovery Mode["In Setting Mode 2 with units stopped, set item No
  • Service Diagnosis (ARC452 - Method 1)["Hold TIMER CANCEL button for 5 seconds (00 appears on temperature display)","Press TIMER CANCEL…
  • Service Diagnosis (ARC452 - Method 2)["Press TEMP▲, TEMP▼, and MODE buttons simultaneously to enter diagnosis mode","Left-side number…
  • Service Diagnosis (ARC466 - Method 1)["Hold Timer Cancel button for 5 seconds (00 appears on temperature display)","Press Timer Cancel…
  • Service Diagnosis (ARC466 - Method 2)["Press center of Temp button and Mode button simultaneously","5C is displayed; select 5C with…
  • Service Diagnosis (FFQ - Wireless Remote)["Press INSPECTION/TEST OPERATION button to enter inspection mode (0 blinks on UNIT No…
  • Service Mode (Wireless Remote Controller)["From normal mode, press INSPECTION/TEST OPERATION button once to enter Inspection mode.","Press…
  • Service Settings Menu (Wired Remote Controller BRC1E73)["Press and hold Cancel button for 4 seconds or longer from the basic screen."]
  • Setting Mode 1 (Outdoor Unit)["This is the initial/default mode (H1P LED off)","If in another mode, press MODE (BS1) button once…
  • Setting Mode 2 (Outdoor Unit)["From Setting Mode 1, press and hold MODE (BS1) button for more than 5 seconds","H1P LED lights…
  • Test Operation (CTXG, CTXS, FTXS, CDXS, FDXS, FVXS - ARC452 Remote)["Press ON/OFF button to turn on the system","Press both TEMP buttons and MODE button at the same…
  • Test Operation (CTXG, CTXS, FTXS, CDXS, FDXS, FVXS - ARC466 Remote)["Press On/Off button to turn on the system","Press the center of Temp button and Mode button at…
  • Test Operation (FFQ - Wired Remote BRC1E73)["Set to COOL or HEAT operation using the remote controller","Press and hold Cancel button for 4…
  • Test Operation (FFQ - Wireless Remote BRC082A41W/BRC082A42W(S))["Press MODE button and select COOL or HEAT operation","Press INSPECTION/TEST button twice (TEST is…
  • Test Operation (Wired Remote Controller BRC1E73)["Set to COOL or HEAT operation using the remote controller.","Press and hold Cancel button for 4…
  • Test Operation (Wireless Remote Controller BRC082A41W/BRC082A42W(S))["Press OPERATION MODE SELECTOR button and select COOL or HEAT operation.","Press INSPECTION/TEST…
  • Vacuuming Mode["In Setting Mode 2 with units stopped, set item No

Full entry steps, exit procedures, and test sequences are available in Max.

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