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S.31 on Glow-worm Ultracom hxi

Your boiler is currently set to summer mode, which means it is waiting for a request for hot water but 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 Hxi System installation & service manual, page 37.
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

Check your programmer or room thermostat settings.Ensure your heating controls are set to 'ON' or 'Timed' rather than 'Off' or 'Summer'.Adjust the heating dial on the front of the boiler to a higher temperature if it is currently set to zero.

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S.30View →S.32View →

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