BoilerFaultCodes AA0011 High
Boiler Fault Code AA0011
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code AA0011 appears across 1 boiler brand and 2 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler has failed to start up because it could not light the internal flame after several attempts. (As reported on Ariston Genus 24 MFFI)
Pick your boiler brand for the AA0011 fix
Source
Information for the AA0011 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