After hours this evening trying different wiring configs I've got to the stage that I believe the fault is.
The new T720R seems not to like the wiring if I set the stat on one side of the programmer it calls the burners but the pump runs on HW but if I set the stat on the other side it works...
I have just fitted the T720R everything works as it should but the pump runs on both CH & HW.
I've linked the stat wires and tried various configurations but to no avail any help would be grateful
Hi all I am in the last stages of building a lean-to, I've made it into a multi purpose room with a fold-down work bench which is hidden in a cupboard along with other cupboards in the room for storage of tools ect.
Now for the fold down workbench doors I have decided to go for bifold so they...