BoilerFaultCodesTechnical description
Fan fault
What causes this fault?
This fault occurs when the boiler's control board sends a command to the fan but does not receive the correct signals back to confirm it is spinning at the right speed. The most common reasons are a mechanical failure of the fan motor, a loose connection in the internal wiring, or a fault on the main circuit board that manages power to the fan.
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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