BoilerFaultCodesTechnical description
Burner start up in heating mode
What causes this fault?
This code appears when the boiler receives a signal from your thermostat or programmer asking for central heating. It indicates that the control board is performing its internal safety checks and preparing the internal components to ignite the burner. Once the flame is successfully established, the code will disappear and be replaced by the current flow temperature.
You will see this code more frequently during autumn and winter when the central heating is used regularly to keep the home warm.
DIY fix possible
No action is required as this is a normal status operationMonitor the display to see if it changes to 'S.' status codesEnsure your room thermostat is calling for heat if you want the heating to stay on
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