BoilerFaultCodes 365 Emergency
Boiler Fault Code 365
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 365 appears across 1 boiler brand and 6 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 an internal gas valve fault, meaning it can no longer safely manage the flow of fuel to the burner, so it has shut down to protect your home. (As reported on Worcester Bosch 1000)
Pick your boiler brand for the 365 fix
Source
Information for the 365 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