Low
S.31 on Glow-worm 38cxi

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

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 38cxi 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 button or dial on your boiler's control panel.Adjust the setting to the winter icon (usually represented by a radiator and tap symbol) to enable heating.Increase your room thermostat temperature if the heating does not activate immediately.

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