Low
S.30 on Glow-worm Flexicom 24c / 28c

Your boiler is perfectly healthy, but it is currently waiting for a signal from your wall-mounted heating controller to turn the radiators on.

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 from external controls 230V

From this model's manual
Verified against the Glow Worm Flexicom 24c 28c installation & service manual, page 46.
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 room thermostat or smart heating controller and turn the target temperature up higher than the current room temperature.Check if your thermostat is currently in a scheduled 'off' or 'away' mode.Replace the batteries in your room thermostat if it is wireless.

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