BoilerFaultCodes 36.5 High
Boiler Fault Code 36.5
Also written as 365 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 36.5 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 is struggling to maintain the correct gas pressure required to run efficiently, which means it may fail to heat your home or water properly. (As reported on Glow-worm Betacom C)
Pick your boiler brand for the 36.5 fix
Source
Information for the 36.5 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