Bit of a school boy error here. Checked all connections in cable marshalling box and found Orange wire not connected properly.
All working perfectly now.
Never used this site before so your guidance is much appreciated.
If you ever need to know anything about pumps (SPP Pumps Ltd) i'm...
I have not checked to see if I am getting 230v on the white wire with the stat turned down when CH/HW are on. I will check later when home.
I did replace wires colour for colour but thats not to say I did not make a mistake and perhaps I need to double check.
Assuming I wired it up...
Replaced Drayton 3 way valve withe Siemens CMV3 valve.
Valve works fine on HW only and CH only but when both are called to run together the CH will not shut off on the room stat.
I have to switch the CH to off on the programmer.
Wired up as per the wiring Diagram with the Siemens valve...
