BoilerFaultCodesYour boiler's fan is not spinning at the correct speed to safely clear waste gases, causing the system to shut down for safety.
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 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.
DIY fix possible
Press the Reset button on the boiler control panel once.Wait for the boiler to complete its startup sequence.Ensure there are no external blockages to the flue pipe outside your home.
Find a Gas Safe engineer
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Gas Safe Register →Protect yourself from future repair bills
A boiler cover plan would cover faults like 13-64 / 13-65 — no call-out fees, no surprises.
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Could it be time for a new boiler?
If repair costs are adding up, a new energy-efficient boiler could be the smarter long-term choice.
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