BoilerFaultCodes FAIL POINT K High
Boiler Fault Code FAIL POINT K
Also written as FAILPOINTK — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code FAIL POINT K 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's main internal computer has developed a serious communication error and cannot operate, often because it has been exposed to water or has suffered an electrical failure. (As reported on Worcester Bosch Greenstar Si)
Pick your boiler brand for the FAIL POINT K fix
Source
Information for the FAIL POINT K 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