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I have double checked the connections. The boiler only has five wires in the cable. Brown goes to 1, Blue to 2, Green/yellow to 3, White to 7 and Black to 10. The wiring in the junction box is as per the diagram for the Lifestyle LP522 apart from the boiler as the diagram only gives three...

My central heating came on recently even when the CH at the programmer was off and the roomstat turned down low. I assumed that the Mid-position valve was opening for CH when the boiler was running for Hot water. I changed the actuator checking that the valve was not stuck or stiff. It moves...