Where to find air conditioner fault codes, and what they mean.
Carrier
Carrier fault codes for the Carrier Alpha, Carrier Alpha Inverter, Carrier Elite, among other models can be found on Carrier’s own fault code page.
Daikin
Daikin: Error Code Listings/Search Feature.
LG
LG error codes and what they mean.
Hitachi
Hitachi’s alarm/error codes for their room air conditioners [PDF].
Mitsubishi
Mitsubishi error code search engine.
Diamond Air (Mitsubishi Heavy)
Diamond Air error codes for R410a units.
Toshiba
Toshiba air conditioner fault codes.
Fujitsu
Fujitsu air conditioner error codes.
Frigidaire
Some of Frigidaire’s window air conditioner fault codes.
Please contact us to submit error code info if you find any more.