BoilerFaultCodesYour boiler has detected that the internal fan, which safely clears exhaust gases, isn't spinning at the correct speed to keep the system running safely.
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 loses the ability to accurately monitor or regulate the speed of the fan. The most common reasons are a buildup of debris within the fan assembly, a loose electrical connection, or a mechanical failure of the fan motor itself. Without the fan spinning at the correct speed, the boiler cannot safely remove exhaust gases, so it shuts down as a safety precaution.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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