BoilerFaultCodesYour boiler's fan is not spinning fast enough to safely clear exhaust fumes, so the system has shut down as a safety precaution.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Not enough fan driving force
What causes this fault?
This fault occurs when the boiler's control system detects that the fan isn't reaching the necessary speed to safely extract waste gases. The most common reasons are a buildup of dirt on the fan blades, a blockage in the air pipes, or an electrical failure where the circuit board is unable to send power to the fan motor.
This fault is slightly more common in autumn and winter, as debris like fallen leaves can occasionally be sucked into the external flue, obstructing the air intake.
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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A boiler cover plan would cover faults like E65 — no call-out fees, no surprises.
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