BoilerFaultCodesYour boiler has stopped working because the internal fan is not spinning fast enough to safely clear waste gases from the system.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Fan speed too low. Fan harness and connections.
What causes this fault?
This fault occurs when the boiler's control system detects that the fan is not rotating at the required speed to safely expel exhaust gases. The most common reasons are a build-up of debris within the fan's bearings, a loose connection in the wiring, or a failing motor that can no longer reach its target velocity.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
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