BoilerFaultCodesYour boiler's fan is failing to spin at the correct speed to begin the ignition process, preventing the boiler from firing up.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: The fan speed is irregular when starting up
What causes this fault?
This fault occurs when the boiler's internal computer detects that the fan is not rotating fast enough to safely clear out the combustion chamber before ignition. The most common reason is a mechanical failure within the fan motor or a buildup of debris, though electronic issues with the control board can also stop the fan from receiving the correct power signals.
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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