Low
S.24 on Glow-worm Ultracom cxi

Your boiler is operating normally; this is a status message indicating that the burner is currently lit and heating your water.

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

burner on

From this model's manual
Verified against the Glow Worm Ultracom 2 Cxi installation & service manual, page 52.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

What causes this fault?

This code appears because your boiler is functioning exactly as it should and the burner is currently firing to provide heat. It is simply a status update letting you know that gas is being burned to heat the water for your taps or radiators. You do not need to take any action, as this is a sign of normal operation.

DIY fix possible

This fault may be fixable without an engineer. Check your manual first.

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