BoilerFaultCodes CFG High
Boiler Fault Code CFG
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code CFG appears across 1 boiler brand and 2 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler's electronic control board has not completed its necessary setup process or is failing to recognize its internal settings. (As reported on Vokera Pinnacle Combi)
Pick your boiler brand for the CFG fix
Source
Information for the CFG 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 7 July 2026