BoilerFaultCodesTechnical description
The fan speed is too high
What causes this fault?
This fault occurs when the boiler's control system loses the ability to regulate the fan, causing it to spin at an unsafe speed. It is usually triggered by a communication failure between the electronic control board and the fan motor, or a physical defect within the fan's internal sensors. The boiler shuts down immediately as a safety precaution to ensure the gas and air mixture remains stable.
Engineer required
This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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