Low
S.31 on Glow-worm Energy

Your boiler is currently in standby mode because it has not been asked to provide any heating or hot water, and it is functioning exactly as it should.

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

No heating demand: Summer mode, eBUS controller, waiting period

From this model's manual
Verified against the Glow Worm Energy installation & service manual, page 32.
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 thermostat or programmer settings to ensure a heating or hot water demand is requestedVerify that the boiler is not set to 'Summer Mode' if you require central heatingEnsure your external controller or smart thermostat has an active connection to the boiler

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