I have used an 8 core. I didn't have time to fault find at time so left internal out. I had a feeling that when I connected the internal it was knocking out the power to deltabell which MADD it's battery kick in. OR created a tamper on it. When I go back there on weekend I will have a play with it. I forgot to link the second tamper terminal in deltabell to 0v so did that in panel. Maybe this is what tge issue is.

As I said I will go back there and have a look with a bit of time. I will keep delta wired as it was and put in wire bh wire to see what trips it and then series up tampers. Maybe flick the jumper on delta to make it scb.

Take some piccies, 1 at panel bell connections, 1 at external and one at internal. Make sure the writing on the pcb/connection labels is readable and post the here

Ok I will. But I'm just going to link out the tamper on internal and external bell tamper in. And see how it goes. It's my uncles house so having tamper off on the internal is not really concerning.

Might be if he gets broken into.

he got external going off. And he got a speech dialler

I'm keeping external bell tamper

Sorry, read it as taking both out.

 

You really should have not mentioned the speech dialer here.

 

Puts on crash helmet and awaits the "comments".

I'm not really bothered to be honest pal. Thanks though