That's exceptionally helpful and clear - thanks Stem - much appreciated. I think what I will do given the volume of wires is like you say run a single wire from nest box which isn't too roomy to a set of terminals to group everything together.
Thanks again.
Paul
Hi Stem,
I am working on the assumption that the central heating valve is the one just above the pump on the bottom of the airing cupboard photo & that is indeed wired to the C terminal.
The remaining terminal 5 is looped directly to the live by a brown wire which you can sort of see in the...
Hi Stem,
I have tested and the thermostat was the red wire on terminal 4 as you suspected with the yellow wire going to the C connector. I have left the wires off in this photo.
Cheers,
Paul
Thanks Stem - much appreciated. Pretty sure it's an S plan - two motorised valves and pump in the airing cupboard as per photo.
You are correct that there is a thermostat - I will try and isolate which wires those are this afternoon and get back to you. Thanks again for your help.
Paul
Hi,
I am replacing the above controller with a Nest controller but am having a bit of a problem working out how the system has been wired up. It works fine so rather than mess with it I am wondering whether I can just wire the Nest in from the current wiring points on the base board of the...