You need a permanent live its that simple should be wired In to L2 . You need to check connections if any of incoming supply's have been linked that's not correct either.Hi exedon, mine is the 15/21 which is a tightly fitted unit and why I chose it as it was going on a walkway of 900mm and only taking up 400mm all in. I’ll get a look at the wiring tomorrow and if it’s no right I’ll get you it sorted.
But I guess my main question is how can I tell if there is no permanent live to the boiler at present by using what is actually there??
Cheers
They really are a simple boiler to wire including pipe stat work in boiler 10 min max.
When you get cover of post some pics.