BoilerFaultCodes Overheat safety trip High
Boiler Fault Code Overheat safety trip
Also written as OVERHEATSAFETYTRIP — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code Overheat safety trip appears across 1 boiler brand and 1 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler has switched itself off to prevent it from getting too hot and causing internal damage. (As reported on Gledhill GB35C)
Pick your boiler brand for the Overheat safety trip fix
Source
Information for the Overheat safety trip 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