Burner ON neon (green) Low

Glow-worm Burner ON neon (green) Fault Code

Also written as BURNERONNEONGREEN — same fault.

The Glow-worm Burner ON neon (green) fault code means: your boiler is operating exactly as it should, and the green light simply lets you know that the flame is lit and the system is heating your home.. It appears on 3 Glow-worm models in our database.

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.

Technical description: Burner will light shown by the burner ON neon (green) on the control panel lighting up.

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Glow-worm models that show the Burner ON neon (green) fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Glow-worm Burner ON neon (green) fault code information on this page is sourced and cross-checked against the official Glow-worm service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026