Independent technical reference
Daikin
222 published entries
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Equipment covered
Documented codes
Air-to-water heat pump 25
8H-01Daikin Altherma 4 H F 8H-01: Overheating of the main zone water circuitMedium· Heat pumps8H-02Daikin Altherma 4 H F 8H-02: Overheating of the main zone water circuit thermostatMedium· Heat pumps8H-03Daikin Altherma 4 H F 8H-03: Overheating of the space heating water circuit thermostatMedium· Heat pumpsAH00Daikin Altherma 4 H F AH-00: Tank disinfection function not completed correctlyMedium· Heat pumpsE8005Daikin Altherma E8005 heat pump error: low water pressureMedium· Heat pumpsH1-00Daikin Altherma 4 H F H1-00: External temperature thermistor abnormalityMedium· Heat pumpsHC01Daikin Altherma 4 H F HC-01: Upper tank thermistor abnormalityMedium· Heat pumpsHC02Daikin Altherma 4 H F HC-02: Lower tank thermistor abnormalityMedium· Heat pumpsHJ10Daikin Altherma 4 H F HJ-10: Water pressure sensor abnormalityMedium· Heat pumpsL1-54Daikin Altherma 4 H F L1-54: Malfunction of INV PCBMedium· Heat pumpsLH01Daikin Altherma 4 H F LH-01: Converter errorMedium· Heat pumpsP1-00Daikin Altherma 4 H F P1-00: Open-phase power supply imbalanceMedium· Heat pumpsU8-04Daikin Altherma 4 H F U8-04: Unknown USB deviceMedium· Heat pumpsU8-06Daikin Altherma 4 H F U8-06: MMI/bizone kit communication problemMedium· Heat pumpsU8-22Daikin Altherma 4 H F U8-22: Display PCB in bootloaderMedium· Heat pumpsU8-23Daikin Altherma 4 H F U8-23: Display PCB communication issueMedium· Heat pumpsU8-24Daikin Altherma 4 H F U8-24: Display PCB in back port modeMedium· Heat pumpsU8-25Daikin Altherma 4 H F U8-25: Display PCB in self-test modeMedium· Heat pumpsU8-28Daikin Altherma 4 H F U8-28: Invalid DB errorMedium· Heat pumpsU8-29Daikin Altherma 4 H F U8-29: EEPROM loaded with errorsMedium· Heat pumpsUA48Daikin Altherma UA-48: standby power connector status errorMedium· Heat pumpsUH19Daikin Altherma 4 H F UH-19: Too many attempts to unlock the unitMedium· Heat pumpsUJ14Daikin Altherma 4 H F UJ-14: AF communication errorMedium· Heat pumpsUJ20Daikin Altherma UJ-20: outdoor active filter operation warningMedium· Heat pumpsUJ26Daikin Altherma 4 H F UJ-26: active filter operation cautionMedium· Heat pumps
Air conditioner 5
H9Daikin H9 on an air conditioner: outdoor air thermistor faultMedium· HVACJ3Daikin J3 on an air conditioner: discharge pipe thermistor faultMedium· HVACJ6Daikin J6 on an air conditioner: outdoor exchanger sensor faultMedium· HVACUADaikin UA on an air conditioner: indoor and outdoor unit mismatchMedium· HVACC7Daikin C7 on an air conditioner: front panel open/close errorLow· HVAC