Low
S.109 on Glow-worm Betacom4

Your boiler is currently in a power-saving standby mode and is working exactly as intended.

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

Product's standby mode activated

From this model's manual
Verified against the Glow Worm Betacom4 installation & service manual, page 36.
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 to ensure a heating or hot water request has been sentTurn the boiler dial or controls to a 'Summer' or 'Winter' setting to wake the systemEnsure the power supply to the unit is switched on

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