BoilerFaultCodesYour boiler is operating normally and is simply confirming that the burner has successfully lit to provide heat or hot water.
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 IGNITED
What causes this fault?
This is a status notification rather than a mechanical failure, occurring every time the gas valve opens and the electrodes create a spark to light the burner. It signifies that the internal sensors have successfully detected a flame, confirming the boiler is ready to provide heat. Because your boiler is operating as intended, there is no physical fault or broken component to worry about.
DIY fix possible
No action required as this is an operational status indicator rather than a fault code.
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A boiler cover plan would cover faults like D — no call-out fees, no surprises.
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