BoilerFaultCodes.com
S.31 Low Information

Your boiler is currently set to provide hot water only, and the central heating has been turned off.

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: summer mode

What causes this fault?

This status occurs when the central heating function has been manually deactivated on the control panel, leaving only the hot water operational. It is typically caused by a user changing the settings to prevent the radiators from coming on while still needing hot water for taps and showers.

This is most common during the summer months when homeowners intentionally switch off their heating to save energy.

Typical repair cost £0 (including labour)

DIY fix possible

Locate the temperature control knob for the central heating on the boiler fasciaTurn the dial clockwise to set the desired heating temperatureCheck that the 'sun' symbol has changed or disappeared, indicating the boiler is no longer in summer mode

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