BoilerFaultCodesYour boiler is undergoing a restart process, usually following a fault or power interruption, and is attempting to fire up correctly.
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: Turn power off and on
What causes this fault?
This code appears when the boiler's internal computer is performing a software reboot, often triggered after the main power has been switched off and on or following a physical reset. It indicates that the control board is synchronizing its components and checking safety parameters before allowing the burner to ignite. In some cases, it can also appear if there is a momentary fluctuation in the electrical supply to your home.
DIY fix possible
Switch the power to the boiler off at the fused spur switchWait for 30 secondsSwitch the power back on and wait for the boiler to complete its start-up sequence
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