Fan High

Boiler Fault Code Fan

Also written as FAN — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code Fan appears across 2 boiler brands and 5 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler has stopped working because the internal fan that safely removes exhaust gases is not running correctly. (As reported on Ideal Concord CXC 48 116)

Pick your boiler brand for the Fan fix

Baxi Fan 3 models Ideal Fan 2 models

Source

Information for the Fan 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