Low
S.31 on Glow-worm 30cxi

Your boiler is currently set to summer mode, which means it will only provide hot water to your taps and will not switch on your central heating radiators.

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

summer mode

From this model's manual
Verified against the Glow Worm Glow Worm 30cxi installation & service manual, page 52.
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

Locate the mode selector dial or button on your boiler control panelSwitch the setting from the summer (tap icon) position to the winter (radiator and tap icon) positionAdjust your room thermostat to a temperature higher than the current room temperature to initiate heating

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Related fault codes

S.30View →S.32View →

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