BoilerFaultCodesYour boiler is currently set to a maintenance mode used by engineers to check the internals and is not in its normal operating state.
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: Diverter Valve in mid-position for service
What causes this fault?
This code appears when the boiler has been manually put into a specific service mode to allow an engineer to drain the system or inspect the internal components. It occurs because the internal diverter valve has been electronically locked in a central position rather than switching between heating and hot water. While not a mechanical breakdown, the boiler will not operate normally until this software setting is deactivated.
DIY fix possible
Turn the boiler power off at the fused spur switchWait 30 secondsTurn the power back on to allow the boiler to reset and move the valve to the correct position
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