BoilerFaultCodesYour boiler has stopped working because the internal fan, which safely exhausts gases, is either not spinning or not being detected by the system.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Fan (46)
What causes this fault?
This fault occurs when the boiler's control system detects that the internal fan is not spinning fast enough to safely clear waste gases from the flue. The most common reasons are a physical failure of the fan motor, a blockage in the flue pipe, or the air pressure switch failing to register that the fan is working correctly.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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