Low
d.16 on Glow-worm Easicom 24

Your boiler is simply reporting that it is currently receiving a signal from your thermostat, which is normal operation rather than a system fault.

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

Current state of the 24V room thermostat

From this model's manual
Verified against the Glow Worm Easicom 24 installation & service manual, page 26.
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 is set to the temperature you desireEnsure the thermostat is not set to 'Off' or 'Frost Protection' if you want heatingMonitor your boiler to see if it heats up normally when the thermostat calls for heat

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