Your boiler is currently firing up and heating normally; this is a status update rather than a fault code.
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 status occurs when the boiler has successfully completed its ignition sequence and the burner is now actively heating your water. It is a sign that the internal gas valve has opened and the spark electrode has ignited the fuel to provide heat for your radiators or hot water tank. This is part of the boiler's normal operation and indicates the system is working exactly as it should.
DIY fix possible
This fault may be fixable without an engineer. Check your manual first.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Protect yourself from future repair bills
A boiler cover plan would cover faults like S.24 — no call-out fees, no surprises.
Affiliate links — we may earn a commission at no extra cost to you.