Fan Hunt High

Boiler Fault Code Fan Hunt

Also written as FANHUNT — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code Fan Hunt appears across 2 boiler brands and 3 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler is struggling to start up properly because the main internal computer is failing to control the fan correctly. (As reported on Glow-worm Ultimate3)

Pick your boiler brand for the Fan Hunt fix

Glow-worm Fan Hunt 2 models Saunier Duval Fan Hunt 1 model

Source

Information for the Fan Hunt 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