Low
d.24 on Glow-worm Ultimate 3 25R

Your boiler is simply reporting the current reading from the water pressure sensor to help you keep track of your system's status.

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

Status of the pressure monitor

From this model's manual
Verified against the Glow Worm Ultimate 3 25r installation & service manual, page 30.
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 boiler's pressure gauge on the front display.Ensure the needle is in the green zone, typically between 1.0 and 1.5 bar.If the pressure is too low, use your filling loop to top it up to the correct level.

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