BoilerFaultCodes F012 High
Boiler Fault Code F012
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code F012 appears across 1 boiler brand and 5 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler has stopped working because its internal temperature sensor is reporting an error, meaning it can no longer monitor heat levels safely. (As reported on Intergas Xtreme)
Pick your boiler brand for the F012 fix
Source
Information for the F012 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