BoilerFaultCodesWhat the manual says
Manufacturer manualburner on
From this model's manual
Verified against the Glow Worm Flexicom Cx installation & service manual, page 45.
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
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