High Lockout
E160 on Potterton Promax HE Store

Your boiler has stopped working because the fan that clears away waste gases is not spinning correctly or communicating with the control system.

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 or Fan Wiring Fault

What causes this fault?

This fault occurs when the boiler's internal computer detects that the fan is not spinning at the correct speed to safely expel exhaust gases. The most common reasons are a mechanical failure of the fan motor, loose electrical connections, or a fault on the main control board that prevents it from sending power to the 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

E133View →

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