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Nest Thermostats
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Forum Posts

Thermostat Wiring

 Need help winning Nest Gen 3. Have 5 wires in picture above. Green to G, Blue to C, Red to R, White to W, and Yellow to Y. On NEST Gen 3 I put Green to G, Red to R, Blue to B/O, Yellow to Y1 and White to Y2. Is this correct?

Shecke by Community Member
  • 3 replies
  • 0 kudos

How to connect more than one device to thermostat

How do you connect more than one device to a Nest thermostat? We have one connected, but now when you go into settings on the thermostat it no longer displays the key, so can’t connect another one! Many thanks.

KRW by Community Member
  • 6 replies
  • 0 kudos

Honeywell bdr91 to nest e

I am replacing the BDR91 with an nest e. I have had a look on various threads but my BDR91 seems to be wired differently to others There is a bridge wire from L on the left, to A on the right. im assuming the B would go to NO and live on the left to ...

Jon1988 by Community Member
  • 4 replies
  • 0 kudos

3rd failed heat link

This is the third time a “Heat Link” unit has failed!!Each time i have purchased a complete new Nest Learning Thermostat, so i now have a 3 new Displays that I can’t use as i have users the “Heat Link” that came with the new thermostats to replace th...

JPGUK by Community Member
  • 13 replies
  • 1 kudos

Nest energy history not working

My Nest energy history hasn’t updated for a week.I have reset the thermostat and checked everything I can think of but can’t get it to update my energy history.any help would be appreciated

BradleyB by Community Member
  • 7 replies
  • 2 kudos

Thermostat not turning the heat on

I am curious if anyone had a problem with a display and got it replaced.I have 2 thermostats control the same under floor heating. I tried to test them out to get ready for the cold weather, I noticed 1 thermostat didn't turn on the heat. When I turn...

hyunyi by Community Member
  • 12 replies
  • 0 kudos

Heatlink stopped working

As per many per many other users, heatlink has suddenly died. No lights, etc etc. Without heat!! Not happy. Tried all the troubleshooting and read the forums. Can’t find a solution. tried these steps:Does anything happen if you press its button for 3...

Jewelzowen by Community Member
  • 22 replies
  • 0 kudos

Mode switch without direction

Last night the Nest changed from cool mode to heat mode without direction. The history says the app changed it but neither my wife nor I made any change. Both schedules and learning are disabled.

Sapper16 by Community Member
  • 3 replies
  • 0 kudos