OP
vintageaxeman
Well people, I've solved it.
I decided that if all the connections were present and correct, and that all the valves, components and so on were ok, then it must be the wiring itself. What I found was that one wire from the programmer to the wiring centre was fractured and had intermittent contact. It's the one that turned the pump and valve on when heating was called for.
SOLVED!!!!
Thank you all so much for your help!
I decided that if all the connections were present and correct, and that all the valves, components and so on were ok, then it must be the wiring itself. What I found was that one wire from the programmer to the wiring centre was fractured and had intermittent contact. It's the one that turned the pump and valve on when heating was called for.
SOLVED!!!!
Thank you all so much for your help!
Last edited by a moderator: