Daikin error codes and fault guides
Browse 27 published, evidence-gated Daikin guides. Each page states the supported model and region, official source, safe checks, and the point to stop.
Daikin fault guides
1–24 of 27
indoor printed-circuit-board defect
A1 is listed in Daikin's official, model-scoped air-conditioner fault table as indoor printed-circuit-board defect.
high-pressure control or freeze-up protector operation
A5 is listed in Daikin's official, model-scoped air-conditioner fault table as high-pressure control or freeze-up protector operation.
indoor fan-motor fault
A6 is listed in Daikin's official, model-scoped air-conditioner fault table as indoor fan-motor fault.
heat-exchanger temperature sensor fault
C4 is listed in Daikin's official, model-scoped air-conditioner fault table as heat-exchanger temperature sensor fault.
suction-air temperature sensor fault
C9 is listed in Daikin's official, model-scoped air-conditioner fault table as suction-air temperature sensor fault.
outdoor circuit-board fault
E1 is listed in Daikin's official, model-scoped air-conditioner fault table as outdoor circuit-board fault.
compressor overload protector operation
E5 is listed in Daikin's official, model-scoped air-conditioner fault table as compressor overload protector operation.
compressor start-up fault
E6 is listed in Daikin's official, model-scoped air-conditioner fault table as compressor start-up fault.
outdoor DC fan-motor fault
E7 is listed in Daikin's official, model-scoped air-conditioner fault table as outdoor DC fan-motor fault.
input overcurrent
E8 is listed in Daikin's official, model-scoped air-conditioner fault table as input overcurrent.
cooling/heating switching error
EA is listed in Daikin's official, model-scoped air-conditioner fault table as cooling/heating switching error.
high discharge-pipe temperature control
F3 is listed in Daikin's official, model-scoped air-conditioner fault table as high discharge-pipe temperature control.
high-pressure control during cooling
F6 is listed in Daikin's official, model-scoped air-conditioner fault table as high-pressure control during cooling.
outdoor sensor fault
H0 is listed in Daikin's official, model-scoped air-conditioner fault table as outdoor sensor fault.
operation halted by a compressor position-detection sensor fault
H6 is listed in Daikin's official, model-scoped air-conditioner fault table as operation halted by a compressor position-detection sensor fault.
DC current-sensor fault
H8 is listed in Daikin's official, model-scoped air-conditioner fault table as DC current-sensor fault.
outdoor suction-air temperature sensor fault
H9 is listed in Daikin's official, model-scoped air-conditioner fault table as outdoor suction-air temperature sensor fault.
discharge-pipe temperature sensor fault
J3 is listed in Daikin's official, model-scoped air-conditioner fault table as discharge-pipe temperature sensor fault.
outdoor heat-exchanger temperature sensor fault
J6 is listed in Daikin's official, model-scoped air-conditioner fault table as outdoor heat-exchanger temperature sensor fault.
electrical-parts heat fault
L3 is listed in Daikin's official, model-scoped air-conditioner fault table as electrical-parts heat fault.
high temperature at the inverter-circuit heat sink
L4 is listed in Daikin's official, model-scoped air-conditioner fault table as high temperature at the inverter-circuit heat sink.
inverter output overcurrent
L5 is listed in Daikin's official, model-scoped air-conditioner fault table as inverter output overcurrent.
inverter-circuit heat-sink temperature sensor fault
P4 is listed in Daikin's official, model-scoped air-conditioner fault table as inverter-circuit heat-sink temperature sensor fault.
refrigerant shortage
U0 is listed in Daikin's official, model-scoped air-conditioner fault table as refrigerant shortage.