Feel I need to come back to this, while the heating works fine. The hot water is luke warm unless I have the thermostat on/above 20°. There's nothing showing in the app that says it's controlling the hot water. Perhaps I've gone wrong somewhere during the setup.
I'll post a photo of the nest...
OK, so a few days ago I turned the top oven/grill on and the bulb inside began to flash inconsistently (as soon as I turned the dial) along with the indicator light.
I had originally turned it on today to take a video of the flashing light but it appears to come on as normal. I've not left it...
Thanks :D, I'm now the proud owner of an installed nest e thermostat. Seeing all those wires for the first time was a bit daunting. Turns out it was the easiest part of the whole process.
I've had a quick look on the forum and have found similar but nothing I can see that's double cabled and with a fuse box.
I think I've identified the black as C and grey as NO via the forum.
Question is, what do I do with the wires from the boiler and fuse box. I'm assuming these do not go to...