BoilerFaultCodes.com
S.05 Low Information

Your boiler is currently taking a short pause to circulate water and cool down internal parts after a period of heating.

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.

Technical description: Heating mode: Pump/fan overrun. The pump/fan overrun for heating mode is activated.

What causes this fault?

This status occurs when the boiler has finished a central heating cycle and needs to dissipate residual heat from the internal heat exchanger. The pump continues to run to move hot water away from the burner, ensuring the internal components cool down safely and efficiently. It is a programmed safety and maintenance routine rather than a mechanical failure.

Typical repair cost £0 (including labour)

DIY fix possible

No action is required as this is a normal operational status message.Wait a few minutes for the timer to finish and the code to disappear.Check that your radiators are turned on to help the heat dissipate more quickly.

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