topic Re: Nest Thermostat won't turn on heat in Nest Thermostats

Nest Thermostat won't turn on heat

spet2522 — Tue, 19 Apr 2022 18:49:15 GMT

Hi all

I have just purchased a Nest Thermostat E to replace a Polypipe PBPRP thermostat. I went through the compatibility checker but got stuck at the point where it asked about the labels on each of the wires, as the wires weren't labelled. There were two wires, one red and one black. There were a few other wires coming out the all, but these weren't connected to the thermostat.

Anyhow, I followed the set-up instructions, but the thermostat fails to turn the boiler on. When I manually turn the temperature up, the heat link gives a double click, which may suggest that it it trying to turn the boiler on, but then straight away turns it off. I went with this model so that I could install it myself, so am reluctant to call someone out. Any help would therefore be much appreciated!

Thanks

Jonathan

Re: Nest Thermostat won't turn on heat

Stuff — Tue, 19 Apr 2022 21:20:46 GMT

Confirm that you connected the two wires to the C and NO screws on the Nest E Heat Link.

Re: Nest Thermostat won't turn on heat

spet2522 — Tue, 19 Apr 2022 21:24:05 GMT

Thanks. Checked and double checked.

Re: Nest Thermostat won't turn on heat

Stuff — Tue, 19 Apr 2022 21:39:20 GMT

Return it and get another one as it sounds broken.

Re: Nest Thermostat won't turn on heat

AndaD — Wed, 20 Apr 2022 09:36:53 GMT

Hi there and thanks for reaching out. Let's check on this. Can you tell us what type of boiler you currently have, a combi or a system one? The combi boiler has water on demand and the system comes with a separate water tank.

Re: Nest Thermostat won't turn on heat

CristianC — Fri, 22 Apr 2022 14:11:05 GMT

Hi there. Just checking in. How's it going with your thermostat?

Re: Nest Thermostat won't turn on heat

spet2522 — Fri, 22 Apr 2022 15:14:34 GMT

I paid someone to do it, and now all working. I should learn that I can't do DIY....

Re: Nest Thermostat won't turn on heat

CristianC — Mon, 25 Apr 2022 09:03:53 GMT

Hey @spet2522. I'm glad to hear it's working. I'll lock this thread, but if anything comes up, feel free to open a new one.