BoilerFaultCodes F0 242 High
Boiler Fault Code F0 242
Also written as F0242 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code F0 242 appears across 1 boiler brand and 9 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler's internal computer has encountered a major electronic communication fault, meaning it cannot process the commands needed to heat your home. (As reported on Worcester Bosch Junior 28i)
Pick your boiler brand for the F0 242 fix
Source
Information for the F0 242 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