BoilerFaultCodes 327 High
Boiler Fault Code 327
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 327 appears across 2 boiler brands 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's reset button is either physically jammed or there is an electrical issue preventing it from working, which has caused the system to lock out for safety. (As reported on Worcester Bosch Greenstar 12i System)
Pick your boiler brand for the 327 fix
Source
Information for the 327 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 31 August 2026