High Lockout
E05 on Remeha Avanta 18V

Your boiler has stopped working because the internal fan, which safely exhausts gases, is not spinning at the correct speed.

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 speed error

What causes this fault?

This fault occurs when the boiler's control system detects that the fan is not spinning at the required speed to safely remove exhaust gases. It is usually caused by a physical failure of the fan motor, a loose connection in the internal wiring, or a fault on the main circuit 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

E04View →E13View →

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