Manufacturer guides
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.
27Published guides
2Current page
2Total pages
Verified catalog
Daikin fault guides
25–27 of 27
DaikinUrgent
Air conditionerU2
main-circuit voltage drop or overvoltage
U2 is listed in Daikin's official, model-scoped air-conditioner fault table as main-circuit voltage drop or overvoltage.
DaikinHigh attention
Air conditionerU4
transmission failure between indoor and outdoor units
U4 is listed in Daikin's official, model-scoped air-conditioner fault table as transmission failure between indoor and outdoor units.
DaikinHigh attention
Air conditionerUA
indoor/outdoor unit combination fault
UA is listed in Daikin's official, model-scoped air-conditioner fault table as indoor/outdoor unit combination fault.