Google Nest Community

Question on wiring for Nest 3rd generation thermostat

I have two U1 wires on my existing thermostat and my unit has a humidifier. In that case, is it enough to one of the U1 wires to the * terminal on nest?

Why is my heating coming on at 3am?

Hi, I have a new Nest thermostat. I've programmed the heating to 18 degrees at 7am and to 9 degrees at 10pm, assuming that will give me heating during the day and it will be off at night. However, the heating is coming on at 3am each morning. What am...

E23 after battery died

Last week noticed it wasn't cooling in my house. Ok pulled of the head unit put it on charge no issue checked over r wire confirm 24vac going to wire and c is completing the circuit. Just in case I checked the water shut off the voltage from the tran...

B and w terminals. No R????

My Honeywell thermostat has a black and a white wire. They were hooked up to the w terminal and the b terminal. No other wires or hookups. What are these wires supposed to be? R and w?

Is my thermostate compatable to the Nest

Thermostat Compatibility

I can't add my Nest thermostat to the Nest app

I'm not able to connect my Nest thermostat to the Nest app. I've chosen both options to add the product, scanning the QR code on the back of the nest and continuing without scanning, and neither works. When the app asks for the entry key is when the ...

How to remove built up memory?

I keep the heat 0n 55 when gone but something turns it up to 67 while we are gone.

Trane wiring for nest

 this is my wiring on a Trane

Nest Link failed. Third Post of ongoing Problem as Reported

As previously Reported .I have now at my expense bought a new Nest so I can control the heating . I must say it was an expense I could do without. I hope this lasts longer than my last one. At the moment I will not be recommending...BUT at least I am...