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Well I had a look at the boiler wiring tonight and it looks about right, not sure on the diagram about removing the link between terminals 1-2 to connect an external controller. There was already a controller connected with the bridge intact. Neurtral and live are correct and as expected. This...

Hi, sorry to dig up an old thread but I have the same setup as OP. I've wired in the nest e hub as instructed, when calling for heat boiler fires up as expected.. but when switching off the whole boiler turns off. Not sure if this is because of the way the boiler is wired up at the mains or...