BoilerFaultCodesYour boiler is pausing because its internal fan is not reaching the correct speed required to safely start the heating process.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Fan unit waiting period
What causes this fault?
This fault occurs when the boiler's control system detects that the fan is not spinning at the specific speed required to safely clear spent gases from the combustion chamber. The most common reasons are a build-up of debris within the fan motor or a communication failure between the main circuit board and the fan's power supply.
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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