BoilerFaultCodes 242 F0 High
Boiler Fault Code 242 F0
Also written as 242F0 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 242 F0 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 has detected a serious internal computer error that prevents it from operating safely. (As reported on Worcester Bosch Greenstar CDi Compact)
Pick your boiler brand for the 242 F0 fix
Source
Information for the 242 F0 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