BoilerFaultCodesTechnical description
Fault:Fan | Plugonfannotcorrectlypluggedin,multipleplugonPCBnotcorrectly pluggedin,breakincableharness,fanblocked,Hallsensordefective, electronicsdefective
What causes this fault?
This fault occurs when the boiler's internal computer detects that the fan is not spinning at the correct speed to safely clear waste gases. The most common reasons are a physical blockage preventing the blades from turning or an electrical failure in the fan’s motor or communication wires.
This fault can be more common in autumn and winter if high winds create back-pressure in the flue or if debris like dead leaves gets sucked into the air intake.
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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