BoilerFaultCodesYour boiler is currently operating normally in central heating mode and is not experiencing a fault.
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 on
What causes this fault?
This code appears because your boiler is functioning correctly and is currently in the middle of a central heating cycle. It indicates that the burner has successfully ignited and is actively burning gas to heat the water for your radiators. You do not need to take any action as this is a standard status update rather than an error.
DIY fix possible
Check your thermostat or programmer settings if you did not expect the heating to be onNo action is required as this is a status message rather than an error codeMonitor the display to see if it changes to '0' when heating is turned off
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.14 — no call-out fees, no surprises.
Affiliate links — we may earn a commission at no extra cost to you.
Glow-worm Flexicom cx is discontinued — time for a new one?
Parts for discontinued models can be hard to find and expensive. A new A-rated boiler could save you money on both repairs and energy bills.
Affiliate links — we may earn a commission at no extra cost to you.