BoilerFaultCodes AA2200 Emergency
Boiler Fault Code AA2200
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code AA2200 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 detected a flame inside when it hasn't asked for one, which suggests a dangerous internal sensor or electrical fault. (As reported on Ariston Genus 24 MFFI)
Pick your boiler brand for the AA2200 fix
Source
Information for the AA2200 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