Can't find an identical problem, so here goes.
Nest v3 installed in the summer, by my local gas engineer. Don't want to bother him again as he took pity on us and charged us an unbelievably low price to sort out many issues left by a previous cowboy.
Heating and hot water are on a Y plan...
Hi,
I'm trying to install a Nest Heat Link it to link to my Potterton Promax SL boiler, and worried I don't fully understand the wiring on the back of my old programmer!
I figure it should be fairly straightforward to swap over from my old programmer to the Heat Link, from seeing similar...
Hello,
I'm going to replace my ESI controls and thermostats with 2 NESTS. I have 2-zone + HW GCH. I think I've worked everything out and I'm confident that I can get this done myself.
On the pictures attached you can see main board and zoom on the wires that I can reuse.
They are upside down...