BoilerFaultCodes Fan doesn't turn High
Boiler Fault Code Fan doesn't turn
Also written as FANDOESNTTURN — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code Fan doesn't turn 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 boiler is unable to start up or heat your water because the internal fan that clears away exhaust gases isn't spinning. (As reported on Biasi Riva Compact 24S)
Pick your boiler brand for the Fan doesn't turn fix
Source
Information for the Fan doesn't turn 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