Technical description
Fan error
What causes this fault?
This fault occurs when the boiler's internal computer detects that the fan isn't spinning fast enough to safely push exhaust fumes out of the flue. The most common reason is that the fan motor has seized due to age or wear, or there is a build-up of debris blocking the fan's movement.
This fault often appears during the first cold snap of autumn when a fan that has sat idle all summer struggles to start up again.
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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