Low
d.06 on Glow-worm Sustain 12s

This code is simply showing you the current temperature setting for your hot water system rather than indicating a 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

Hot water set target temperature

From this model's manual
Verified against the Glow Worm Sustain 12s installation & service manual, page 29.
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

Recognise that this is an information display and not an error codePress the back or menu button on your boiler display to return to the home screenNo physical intervention or repairs are required

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