BoilerFaultCodesTechnical description
Fan speed error – try resetting the boiler
What causes this fault?
This fault occurs when the boiler's internal computer detects that the fan is spinning too slowly or not at all, meaning it cannot safely expel exhaust fumes or pull in fresh air. The most common reasons include a mechanical failure within the fan motor itself, a loose connection in the wiring, or a fault on the main control board that prevents it from sending the correct signals 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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