BoilerFaultCodes 2940 High
Boiler Fault Code 2940
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 2940 appears across 1 boiler brand and 8 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 communication error or hardware fault within its main control system, preventing it from firing up safely. (As reported on Worcester Bosch Greenstar 8000 Life/Style)
Pick your boiler brand for the 2940 fix
Source
Information for the 2940 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