BoilerFaultCodesTechnical description
Heat mode – burner on error
What causes this fault?
This is a normal status message indicating that your boiler is currently in 'Heating Mode' and the burner is successfully lit to provide warmth to your radiators. It appears when the internal thermostat calls for heat and the startup sequence has completed without any issues. Because this is a standard operating state rather than a failure, no repair is necessary.
This code is most frequently seen during the autumn and winter months when the central heating is programmed to be active for longer periods.
DIY fix possible
Check that your room thermostat is set to the desired temperatureEnsure your radiator valves are openMonitor the boiler to ensure it transitions to other codes once the heating demand is met
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