Independent technical reference
Daikin
222 published entries
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Equipment covered
Documented codes
Air-to-water heat pump 48
L5-00Daikin Altherma 4 H F L5-00: inverter DC output overcurrentHigh· Heat pumpsL8-00Daikin Altherma 4 H F L8-00: inverter PCB thermal protectionHigh· Heat pumpsL8-01Daikin Altherma 4 H F L8-01: Malfunction triggered by a thermal protection in the inverter PCBHigh· Heat pumpsL8-02Daikin Altherma 4 H F L8-02: Malfunction triggered by a thermal protection in the inverter PCBHigh· Heat pumpsL8-03Daikin Altherma 4 H F L8-03: Malfunction triggered by a thermal protection in the inverter PCBHigh· Heat pumpsL8-04Daikin Altherma 4 H F L8-04: Malfunction triggered by a thermal protection in the inverter PCBHigh· Heat pumpsL8-05Daikin Altherma 4 H F L8-05: Malfunction triggered by a thermal protection in the inverter PCBHigh· Heat pumpsL8-14Daikin Altherma 4 H F L8-14: Malfunction triggered by a thermal protection in the inverter PCBHigh· Heat pumpsL9-01Daikin Altherma 4 H F L9-01: Malfunction in transmission system of outdoor unitHigh· Heat pumpsL9-02Daikin Altherma 4 H F L9-02: Malfunction in transmission system of outdoor unitHigh· Heat pumpsL9-03Daikin Altherma 4 H F L9-03: Malfunction in transmission system of outdoor unitHigh· Heat pumpsL9-13Daikin Altherma 4 H F L9-13: Malfunction in transmission system of outdoor unitHigh· Heat pumpsLC00Daikin Altherma 4 H F LC-00: Malfunction in communication system of outdoor unitHigh· Heat pumpsLC01Daikin Altherma 4 H F LC-01: Malfunction in communication system of outdoor unitHigh· Heat pumpsLC02Daikin Altherma 4 H F LC-02: Malfunction in transmission system of outdoor unitHigh· Heat pumpsLC03Daikin Altherma 4 H F LC-03: Malfunction in transmission system of outdoor unitHigh· Heat pumpsLC05Daikin Altherma 4 H F LC-05: Malfunction in transmission system of outdoor unitHigh· Heat pumpsLC33Daikin Altherma 4 H F LC-33: Malfunction in transmission system of outdoor unitHigh· Heat pumpsP3-01Daikin Altherma P3-01: outdoor unit abnormal direct currentHigh· Heat pumpsP3-04Daikin Altherma 4 H F P3-04: outdoor abnormal direct currentHigh· Heat pumpsP4-01Daikin Altherma 4 H F P4-01: Fin thermistor abnormalityHigh· Heat pumpsP4-02Daikin Altherma 4 H F P4-02: Fin thermistor abnormalityHigh· Heat pumpsP4-03Daikin Altherma 4 H F P4-03: Fin thermistor abnormalityHigh· Heat pumpsPJ01Daikin Altherma 4 H F PJ-01: Capacity setting mismatchHigh· Heat pumpsPJ04Daikin Altherma 4 H F PJ-04: outdoor inverter PCB mismatchHigh· Heat pumpsPJ09Daikin Altherma 4 H F PJ-09: Fan 1 mismatchHigh· Heat pumpsU0-04Daikin Altherma 4 H F U0-04: OU: Shortage of refrigerantHigh· Heat pumpsU0-12Daikin Altherma 4 H F U0-12: Refrigerant cooling dew condensation errorHigh· Heat pumpsU0-13Daikin Altherma 4 H F U0-13: OU: Shortage of refrigerantHigh· Heat pumpsU0-14Daikin Altherma 4 H F U0-14: OU: Shortage of refrigerantHigh· Heat pumpsU0-23Daikin Altherma 4 H F U0-23: OU: Shortage of refrigerantHigh· Heat pumpsU0-36Daikin Altherma 4 H F U0-36: Low refrigerant pressureHigh· Heat pumpsU1-00Daikin Altherma U1-00: reverse phase or open-phase faultHigh· Heat pumpsU1-01Daikin Altherma 4 H F U1-01: reverse or open phase stopHigh· Heat pumpsU2-01Daikin Altherma 4 H F U2-01: inverter supply voltage errorHigh· Heat pumpsU2-02Daikin Altherma 4 H F U2-02: open-phase power supply errorHigh· Heat pumpsU2-03Daikin Altherma 4 H F U2-03: PN short-circuit voltage errorHigh· Heat pumpsU2-04Daikin Altherma 4 H F U2-04: SP-PAM undervoltage confirmedHigh· Heat pumpsU2-07Daikin Altherma 4 H F U2-07: supply voltage converter errorHigh· Heat pumpsU2-31Daikin Altherma U2-31 supply voltage error: instant overcurrentHigh· Heat pumpsU2-35Daikin Altherma 4 H F U2-35: Supply voltage errorHigh· Heat pumpsU2-36Daikin Altherma U2-36 outdoor fan1 supply voltage faultHigh· Heat pumpsU2-37Daikin Altherma U2-37 outdoor fan2 supply voltage faultHigh· Heat pumpsU2-42Daikin Altherma 4 H F U2-42: Supply voltage errorHigh· Heat pumpsU2-43Daikin Altherma U2-43 supply error: overvoltage in operationHigh· Heat pumpsU2-44Daikin Altherma U2-44 supply error: undervoltage in operationHigh· Heat pumpsU3-00Daikin Altherma 4 H F U3-00: Underfloor heating screed dryout function not completed correctlyHigh· Heat pumpsU4-00Daikin Altherma 4 H F U4-00: Indoor/outdoor unit communication problemHigh· Heat pumps