BoilerFaultCodes AA0077 High
Boiler Fault Code AA0077
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code AA0077 appears across 1 boiler brand and 3 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler has unsuccessfully tried to ignite its flame multiple times and has now locked itself to prevent a gas build-up. (As reported on Ariston Micro Condens)
Pick your boiler brand for the AA0077 fix
Source
Information for the AA0077 fault code is sourced from the official service / installation manual for each model that displays it. Read more about how we source fault codes →
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026