BoilerFaultCodes FAIL POINT B High
Boiler Fault Code FAIL POINT B
Also written as FAILPOINTB — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code FAIL POINT B appears across 1 boiler brand and 4 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler has lost power or has a serious internal electronic failure, meaning it cannot start the ignition process to provide heating or hot water. (As reported on Worcester Bosch 24/28CDi II RSF)
Pick your boiler brand for the FAIL POINT B fix
Source
Information for the FAIL POINT B 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