Technical description
Burner Lit / Correct operation
What causes this 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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