BoilerFaultCodes 0A2 High
Boiler Fault Code 0A2
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 0A2 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 failing to detect a flame, so it has safely shut down to prevent the release of unburnt gas. (As reported on Alpha Pro Tec Plus)
Pick your boiler brand for the 0A2 fix
Source
Information for the 0A2 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