Thanks, D_Hailsham for these, I'll see what I can make of them.
Yes, Cider, I might have to get an electrician eventually.
Another suggestion has been to link-wire through a 8 terminal block to the back-plate of the old programmer and monitor the current on each connection/terminal as the...
I have an old Sangamo 410 (F4) programmer that is worn out. I bought a Salus EP200 (Digital 2 Channel) programmer, but just cannot get the boiler to work with it.
The old Sangamo has 8 connections on its backplate as follows:-
1 - Connected to ?(A) also Bridged to 6
2 - not used
3 - Mains -...