BoilerFaultCodesYour boiler has switched itself off because the fan, which manages air and gas flow, is not spinning at the correct speed to operate safely.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Incorrect fan speed
What causes this fault?
This fault occurs when the boiler's internal computer detects that the fan is not spinning at the required speed to safely clear exhaust fumes. The most common reasons are a mechanical failure within the fan motor itself or a communication issue where the control board can no longer send power or signals to the fan.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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