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Good news. I wired up per stem's suggestion and we are now back to wireless control :). So my detective activity has led to this. 1. Drayton SCR failed because of a faulty capacitor (common fault supposedly) 2. Old Owner hardwired switch on by connecting live to common closing the...

Thanks will keep that in mind for the frost protection mechanism :). Cheers All. Will let you all know if correcting the wiring works :).

Thank you very much you just confirmed my latest assumption. I had a chat with guys at work all day trying to figure out was going on. As you say they at the moment with the white cable connected (which is probably F) it continually drives the heating as it overrides the switching mechanism...

I've updatd the first post with the wiring diagram from my 30cx. Think I understand it a bit more (maybe). L and R drive the on/off for boiler. Like a switch is L and R are shorted it will turn boiler on. L and R are currently connected so boiler will turn on constantly. If R is connected...

Hi thanks for your replies. I did think about removing to loop between live and number 1, and this indeed did stop the boiler from firing up continuously but the digistat scr also couldn't turn on the heating. Hence why my next thoughts were that probably two white wires existed one to...

Hi All, I just bought a new house which has a Flexicon 30cx boiler along with a Drayton SCR/3RF I noticed that the central heating would always be 'on' regardless of the demand from the SCR receiver. I eventually did some research and thought I had found the problem (my SCR wasn't...