High Lockout
E29 on Vokera Pinnacle

Your boiler has stopped working because the internal fan is not spinning at the correct speed or the system cannot communicate with it.

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

Incorrect signal from fan

What causes this fault?

This fault occurs when the boiler's main control board sends a request for the fan to spin, but the fan either fails to move or cannot report its speed back correctly. The most common reasons are a buildup of dust and debris seizing the fan bearings, a loose connection in the internal wiring, or a failure in the electronic components that control the motor.

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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