High
E05 on Keston System S40

Your boiler's fan has stopped working correctly, which means the system cannot safely clear waste gases and will not allow the boiler to start.

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

Fan failure – boiler cannot detect fan rotation – check fan operation and both connectors onto fan

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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Related fault codes

E04View →E07View →

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