Indicator 2 (Burner Lit) Lit Low

Glow-worm Indicator 2 (Burner Lit) Lit Fault Code

Also written as INDICATOR2BURNERLITLIT — same fault.

The Glow-worm Indicator 2 (Burner Lit) Lit fault code means: your boiler is working exactly as it should and is currently burning gas to provide heat.. 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 Lit / Correct operation

What causes the Glow-worm Indicator 2 (Burner Lit) Lit fault?

This indicator is not a fault; it simply means that the boiler has successfully ignited and is currently burning gas to heat your home or water. It shows that the internal sequence of checks is complete and the burner is operating exactly as intended. No action is required as this is the standard signal for a healthy, working boiler.

You will see this indicator more frequently during the winter months when your heating is active for longer periods to maintain a warm temperature.

DIY fix possible

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

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Glow-worm models that show the Indicator 2 (Burner Lit) Lit fault code

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

Source

Glow-worm Indicator 2 (Burner Lit) Lit 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 27 April 2026