BoilerFaultCodes AA0033 Emergency
Boiler Fault Code AA0033
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code AA0033 appears across 1 boiler brand and 7 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 that the water inside the heating system has become dangerously hot and has shut itself down to prevent damage. (As reported on Ariston E-Combi One 30)
Pick your boiler brand for the AA0033 fix
Source
Information for the AA0033 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