COMBUSTION FAN FAULT High

Boiler Fault Code COMBUSTION FAN FAULT

Also written as COMBUSTIONFANFAULT — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code COMBUSTION FAN FAULT 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 heater has stopped working because the fan that safely clears exhaust gases is not spinning or receiving power. (As reported on Johnson Starley Warmcair DW)

Pick your boiler brand for the COMBUSTION FAN FAULT fix

Johnson Starley COMBUSTION FAN FAULT 1 model

Source

Information for the COMBUSTION FAN FAULT 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