327 High

Boiler Fault Code 327

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code 327 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 not starting because the button used to restart the system is stuck or experiencing an electrical fault. (As reported on Worcester Bosch Greenstar CDi Compact)

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 27 April 2026