BoilerFaultCodesYour boiler is preparing to ignite but is stuck at the stage where the internal fan is spinning up to clear the combustion chamber.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Fan running
What causes this fault?
This status occurs when the boiler is attempting to start its ignition sequence but becomes stuck while the fan is spinning. It typically happens because the fan cannot reach the required speed or the boiler's control board fails to receive a signal confirming that the fan is working correctly. This prevents the boiler from safely moving to the next stage of lighting the burner.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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A boiler cover plan would cover faults like S.1 — 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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