BoilerFaultCodes AA1199 Emergency
Boiler Fault Code AA1199
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code AA1199 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 is still detecting a flame even after it has tried to shut off the gas, which is a significant safety concern. (As reported on Ariston Genus Premium)
Pick your boiler brand for the AA1199 fix
Source
Information for the AA1199 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 27 April 2026