High
Fan runs boiler does not work on Ferroli Sigma 40 FF

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.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description

Check mains supply, terminal block, fuse, external controls, and air pressure switch continuity

Engineer required

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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