BoilerFaultCodesYour boiler is simply running a quick self-test of its internal computer memory as it starts up.
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: Control panel sequence checks the unit data when starting up
What causes this fault?
This occurs during the boiler's initial power-up phase as the internal circuit board performs a safety check on its stored data. It is a brief, automated process designed to ensure the control system is functioning correctly before the boiler begins to fire. The code is a normal part of the starting sequence and does not indicate a breakdown.
DIY fix possible
Wait for the boiler to complete its start-up sequence.If the code stays on the screen, try resetting the boiler using the reset button.Check that the power supply to the boiler is stable.
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