Google Nest Community

Rh has power but Nest says it doesn't

I just got a used Nest Learning Thermostat (3rd gen), and it worked fine for the person I got it from. I used the app to do the wiring, and everything looks OK. The Nest tells me that Rh has no power detected, but when I use a multimeter I get over 2...

App says offline but thermostat is online

HiConsistently getting issues where I use the app to turn heat on but it says offline . Walk down to the thermostat and it’s online have reset thermostat , removed app and installed it again and works for a day then starts issues again. No wifi issue...

Heat link not working - no power

My Nest heat link (3rd Gen) has suddenly stopped working. It's totally dead. There has been no work on the boiler recently. It sounds like this is a common problem with these units. I can't get anything out of Google to order a replacement. Is there ...

No Auto Fan Setting For Nest?

Hi,Bought a home with a 2nd generation Nest thermostat and was surprised to find there is no Auto/On/Off fan setting, like any other thermostat I have ever seen. With the Nest, you can turn the fan on manually or set a schedule for the fan to come on...

Wiring configuration from old thermostat with 1,2,C,R wires to new Nest Learning Thermostat

I am trying to wire our new nest learning thermostat, but have only 4 wires that are connected and colored as follows: White into (1), Green into (2), Blue into (C), and Red into (R). The C and R wires are easy to figure where they go, but into which...

Nest 3 connecting to two transformers

I have a Nest 3, a Carrier central AC system and a Burnham boiler. The AC and the boiler have individual transformers 120v-24v. If I connect heat side only with W, C, Rh, the thermostat works fine, 3.9 or so volts, 200ma, etc. If I connect the air ha...

I reset to factory due to problems. How do I re/register?

unsure about wiring for dual fuel

would like to confirm step in wiring and programing nest for dual fuel

Nest thermostat registration,

When I enter the code I.e.210 DPOTThe response every time is “check the entry key and try again”I cannot get an entry key to be accepted what am I doing wrong