BoilerFaultCodesYour boiler is currently going through a standard starting sequence to clear the air before the burner lights up.
This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.
Technical description: fan pre-run
What causes this fault?
This is a normal part of the boiler's operation and occurs every time you request hot water or heating. The boiler’s fan starts spinning first to clear out any leftover gases from the combustion chamber and to prove it is safe to ignite the burner. It is a standard safety check rather than a mechanical failure.
DIY fix possible
Wait for a few moments to see if the status code changes and the boiler fires up normallyIf the code persists for several minutes, try resetting the boiler using the power buttonCheck that the external flue pipe is not blocked by debris or leaves
Find a Gas Safe engineer
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A boiler cover plan would cover faults like S.01 — no call-out fees, no surprises.
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Parts for discontinued models can be hard to find and expensive. A new A-rated boiler could save you money on both repairs and energy bills.
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