Low
S.34 on Glow-worm Flexicom 24c / 28c

Your boiler has automatically switched on its internal protection mode because it has detected very cold temperatures, aiming to prevent its pipes from freezing.

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

The frost protection function is activated.

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 if your heating is set to an 'Off' or 'Frost' settingEnsure your boiler is left switched on at the power supply so the system can protect itselfWait for the boiler to return to normal operation once the ambient temperature increases

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