Your boiler has stopped working because the internal fan, which safely exhausts fumes, is not communicating with the main control board.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: No signal from fan
What causes this fault?
This fault occurs when the boiler's computer loses contact with the fan responsible for clearing exhaust gases. It is usually caused by a mechanical failure within the fan motor itself or a loose connection in the internal wiring. Because the boiler cannot confirm the fan is spinning safely, it shuts down immediately as a safety precaution.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
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