BoilerFaultCodes Fan runs boiler does not work High
Boiler Fault Code Fan runs boiler does not work
Also written as FANRUNSBOILERDOESNOTWORK — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code Fan runs boiler does not work 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 attempting to start its fan but cannot complete the ignition process, meaning it cannot provide you with heating or hot water at this moment. (As reported on Ferroli Sigma 40 FF)
Pick your boiler brand for the Fan runs boiler does not work fix
Source
Information for the Fan runs boiler does not work 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