BoilerFaultCodesYour boiler has detected a problem with the fan that safely removes exhaust gases, meaning it has shut down for safety.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Fan fault
What causes this fault?
This fault occurs when the boiler's control board cannot detect that the fan is spinning at the correct speed to safely clear exhaust fumes. The most common reasons are a mechanical failure of the fan motor itself or a blockage in the flue that prevents air from moving freely.
This fault is more frequent during periods of high winds, which can create back-pressure in the flue and prevent the fan from starting correctly.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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