Low
S.05 on British Gas 330+

Your boiler is briefly keeping the internal parts running to cool itself down after heating your home or water.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Monitor it

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.

What the manual says

Manufacturer manual

pump / fan overrun

From this model's manual
Verified against the British Gas 330 installation & service manual, page 47.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

DIY fix possible

Wait for 5 to 10 minutes to see if the code disappears naturallyEnsure your radiator valves are open to allow heat to dissipateCheck if your thermostat is still calling for heat

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