BoilerFaultCodes Fan does not run High
Boiler Fault Code Fan does not run
Also written as FANDOESNOTRUN — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code Fan does not run 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 has stopped working because it cannot properly move the air and fumes required for safe operation. (As reported on Worcester Bosch Greenstar 15i System)
Pick your boiler brand for the Fan does not run fix
Source
Information for the Fan does not run 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