Your boiler has shut down because the internal fan is not spinning at the correct speed to safely clear exhaust fumes.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Fan speed incorrect
What causes this fault?
This fault occurs when the boiler's control system detects that the internal fan is spinning too slowly or not moving at all. This is usually caused by a physical blockage in the flue, a mechanical failure within the fan motor, or a loose electrical connection between the fan and the main control board.
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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A boiler cover plan would cover faults like F008 — no call-out fees, no surprises.
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Could it be time for a new boiler?
If repair costs are adding up, a new energy-efficient boiler could be the smarter long-term choice.
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