Independent technical reference
Daikin
222 published entries
ErrorBase is not affiliated with Daikin. The logo and colour only help you recognise the brand. Technical information separated from official support routes.
Equipment covered
Documented codes
Air-to-water heat pump 48
7H-04Daikin Altherma 4 H F 7H-04: Water flow problem during domestic hot water productionHigh· Heat pumps7H-05Daikin Altherma 4 H F 7H-05: Flow abnormality during space heating operationHigh· Heat pumps7H-06Daikin Altherma 4 H F 7H-06: Abnormal flow during cooling operationHigh· Heat pumps7H-09Daikin Altherma 4 H F 7H-09: Abnormal flow during emitter defrostHigh· Heat pumps7H-10Daikin Altherma 4 H F 7H-10: Abnormal flow during tank defrostHigh· Heat pumps7H-11Daikin Altherma 4 H F 7H-11: Flow abnormality during 4-way valve in coolingHigh· Heat pumps7H-23Daikin Altherma 4 H F 7H-23: Main zone pump communication errorHigh· Heat pumps7H-24Daikin Altherma 4 H F 7H-24: Add. zone pump communication errorHigh· Heat pumps81-00Daikin Altherma 4 H F 81-00: water sensor after BUH faultHigh· Heat pumps81-05Daikin Altherma 4 H F 81-05: Loose hanging tank thermistorHigh· Heat pumps81-10Daikin Altherma 4 H F 81-10: Mixed water thermistor abnormality (mixing kit)High· Heat pumps89-01Daikin Altherma 4 H F 89-01: Heat exchanger freeze-up protection activated during defrost operationHigh· Heat pumps89-02Daikin Altherma 4 H F 89-02: Interruption defrost due to low water volumeHigh· Heat pumps89-03Daikin Altherma 4 H F 89-03: Interruption defrost due to low water volumeHigh· Heat pumps89-04Daikin Altherma 4 H F 89-04: Interruption defrost during tank defrostHigh· Heat pumps89-05Daikin Altherma 4 H F 89-05: Heat exchanger freeze-up protection activated during cooling operation. (error)High· Heat pumps89-06Daikin Altherma 4 H F 89-06: Heat exchanger freeze-up protection activated during cooling operation (warning)High· Heat pumps89-09Daikin Altherma 4 H F 89-09: cooling 4-way valve freeze-upHigh· Heat pumps89-10Daikin Altherma 4 H F 89-10: Heat exchanger freeze-up protection activated during 4-way valve in coolingHigh· Heat pumps89-11Daikin Altherma 4 H F 89-11: Heat exchanger freeze-up protection activated during defrost operationHigh· Heat pumps8H-00Daikin Altherma 4 H F 8H-00: Overheating of the space heating water circuitHigh· Heat pumps8H-09Daikin Altherma 4 H F 8H-09: backup heater relay check activeHigh· Heat pumps8H-10Daikin Altherma 4 H F 8H-10: Overheating mixed water safety thermostat (mixing kit)High· Heat pumps8H-11Daikin Altherma 4 H F 8H-11: Overheating/ undercooling mixed water circuit (mixing kit)High· Heat pumpsA0-02Daikin Altherma 4 H F A0-02: Indoor unit gas sensor detectionHigh· Heat pumpsAA01Daikin Altherma 4 H F AA-01: Backup heater overheated or BUH power cable not connectedHigh· Heat pumpsAA07Daikin Altherma 4 H F AA-07: Diverter valve is blocked or incorrect valve type is selectedHigh· Heat pumpsAA08Daikin Altherma 4 H F AA-08: Mixing valve is blocked or incorrect valve type is selectedHigh· Heat pumpsAA09Daikin Altherma 4 H F AA-09: Diverter valve is broken or incorrect valve type is selectedHigh· Heat pumpsAA10Daikin Altherma 4 H F AA-10: Mixing valve is broken or incorrect valve type is selectedHigh· Heat pumpsAA11Daikin Altherma 4 H F AA-11: Tank valve is blocked or incorrect valve type is selectedHigh· Heat pumpsAA12Daikin Altherma 4 H F AA-12: Bypass valve is blocked or incorrect valve type is selectedHigh· Heat pumpsAA13Daikin Altherma 4 H F AA-13: Tank valve is broken or incorrect valve type is selectedHigh· Heat pumpsAA14Daikin Altherma 4 H F AA-14: Bypass valve is broken or incorrect valve type is selectedHigh· Heat pumpsAJ03Daikin Altherma 4 H F AJ-03: DHW long heat-up abnormalityHigh· Heat pumpsC0-00Daikin Altherma 4 H F C0-00: Flow sensor abnormalityHigh· Heat pumpsC0-14Daikin Altherma 4 H F C0-14: Indoor gas sensor has a malfunctionHigh· Heat pumpsC0-15Daikin Altherma 4 H F C0-15: Indoor gas sensor is disconnectedHigh· Heat pumpsCJ02Daikin Altherma 4 H F CJ-02: Room thermistor abnormalityHigh· Heat pumpsE0-06Daikin Altherma 4 H F E0-06: Outdoor unit leakage detection errorHigh· Heat pumpsE1-00Daikin Altherma 4 H F E1-00: OU: PCB defectHigh· Heat pumpsE2-01Daikin Altherma 4 H F E2-01: leakage current detection errorHigh· Heat pumpsE2-06Daikin Altherma 4 H F E2-06: Leakage current detection errorHigh· Heat pumpsE3-00Daikin Altherma 4 H F E3-00: OU: Actuation of high pressure switch (HPS)High· Heat pumpsE3-19Daikin Altherma 4 H F E3-19: OU: Actuation of high pressure switch (HPS)High· Heat pumpsE4-00Daikin Altherma 4 H F E4-00: Abnormal suction pressureHigh· Heat pumpsE5-00Daikin Altherma 4 H F E5-00: OU: Overheat of inverter compressor motorHigh· Heat pumpsE7-01Daikin Altherma 4 H F E7-01: OU: Malfunction of outdoor unit fan motorHigh· Heat pumps