What the manual says
Manufacturer manualHeating demand on boiler is OK
Shared across the range
This code is shared by the boilers in this range, which use the same control board. It may not be printed in this exact variant’s manual.
DIY fix possible
No action is required as this indicates normal operation.Check that your room thermostat is set to the desired temperature.Wait for the boiler to reach temperature, at which point the light may cycle off.
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