topic Re: Temperature sensor does not connect to thermostat in Nest Thermostats

Temperature sensor does not connect to thermostat

Gottzilla — Mon, 29 Nov 2021 03:48:22 GMT

I have three nest temperature sensors. They all lost connection to the thermostat. I removed them from my app, pulled out battery to reset, tried to add them back to my app. Keeps saying cannot connect to thermostat, no matter how close they are to thermostat. I've tried everything on the google suggestion page. still does not work.

Re: Temperature sensor does not connect to thermostat

Craig1 — Wed, 01 Dec 2021 12:03:29 GMT

I have the same problem

Re: Temperature sensor does not connect to thermostat

Craig1 — Wed, 01 Dec 2021 12:07:44 GMT

One thing that worked temporarily was to remove the thermostat and all sensors completely. I recharged the thermostat (the thermostat itself can have connection issue if the internal battery voltage drops low enough). I went through the setup again and it allowed me to connect the sensors again, but after a couple days, they dropped offline again and cannot reconnect. (Thermostat voltage is at 4.0).

Re: Temperature sensor does not connect to thermostat

Gottzilla — Wed, 01 Dec 2021 17:06:17 GMT

So I did this and it worked for me...

https://www.reddit.com/r/Nest/comments/hniald/nest_temp_sensors_offline/hmhu0fo/?context=3

Re: Temperature sensor does not connect to thermostat

Burnedby89 — Thu, 30 Dec 2021 22:32:32 GMT

Did anyone find a fix for this? I have three sensors that went offline after working for 3.5yrs. I was able to reset all of them and re-connect but then a few days later they went offline again. The battery seems to be fine so not sure why this is recently happening?

Re: Temperature sensor does not connect to thermostat

TCB — Tue, 04 Jan 2022 22:17:40 GMT

I have the same temperature connection problem. Have three learning thermostats and three sensors each one individually connected to their own thermostat for past two plus years. One sensor dropped its connection to its thermostat. I cannot set it to connect. Its about 6 ft away, I removed and successfully added it back into the app, but it fails every connection test. Even after resetting the thermostat. WiFi is full strength in that area. Performed two dozen tries over two days. What am i doing wrong, or has the sensor failed?

Re: Temperature sensor does not connect to thermostat

Roxie09 — Thu, 06 Jan 2022 19:17:25 GMT

I’m having the same issue. Did you get it working?

Re: Temperature sensor does not connect to thermostat

TCB — Sat, 08 Jan 2022 23:05:54 GMT

Not yet. Still not connecting.

Re: Temperature sensor does not connect to thermostat

Awiggnz — Fri, 14 Jan 2022 17:04:17 GMT

I'm having the same issue 😕

Re: Temperature sensor does not connect to thermostat

Roxie09 — Fri, 14 Jan 2022 17:30:55 GMT

I found another post somewhere else that said to take the batteries out of the sensors and basically reboot the thermostat. I rebooted to manufacture settings and put the batteries back into the sensors. They started working after that. So try that if you haven’t.

Re: Temperature sensor does not connect to thermostat

TCB — Sat, 15 Jan 2022 01:06:16 GMT

The basement temp sensor mysteriously connected to the basement zone thermostat when I wasn’t looking. All by itself!

After dozens of tries using different recommended procedures over several days, all unsuccessful, I gave up and wandered off to work on other chores.

I have no idea how or why the temperature sensor connected itself to the correct thermostat. I left it sitting about 6 ft away from the thermostat for almost two weeks. Maybe I made it angry trying to configure it so many times and it needed time to cool off.

One evening when adjusting basement temperature upwards (laundry day) using the nest app I noticed the sensor was suddenly communicating correctly with the thermostat, but it was listed in the app as “unassigned”. Assigning it to the basement thermostat was easy after that.

Software that takes so long to complete commands has quality issues IMO

Re: Temperature sensor does not connect to thermostat

Frank3333 — Sat, 15 Jan 2022 20:13:54 GMT

Take the batteries out of all the sensors and restart the connected thermostat from the thermostat (no need to factory reset) once the thermostat is back up, pop the batteries are and recheck the connection

Re: Temperature sensor does not connect to thermostat

holypiper — Sun, 23 Jan 2022 17:43:22 GMT

Can't connect with sensor. Tried placing sensor in a variety of places: beside thermostat, beside router, in every room of the house: NOTHING! Is the sensor faulty?

Re: Temperature sensor does not connect to thermostat

holypiper — Sun, 23 Jan 2022 17:44:44 GMT

Done that: nothing.

Re: Temperature sensor does not connect to thermostat

Yoyodi — Tue, 25 Jan 2022 05:44:04 GMT

I was able to get a connection with the sensors after doing a Restart of the thermostat. Selected the restart option under the reset section in the thermostat UI.

Re: Temperature sensor does not connect to thermostat

gsechen — Sun, 30 Jan 2022 19:47:46 GMT

worked for me, thanks

Re: Temperature sensor does not connect to thermostat

Vinnyhartlove — Sun, 06 Feb 2022 17:08:28 GMT

I've already tried to reset for 10 minutes and I still get nothing so I'm charging up the thermostat itself

Re: Temperature sensor does not connect to thermostat

RMB — Mon, 07 Feb 2022 02:32:44 GMT

My Nest thermostat keeps losing connection to the temperature sensor. I have to restart thermostat at least 1-2 times per week to reestablish the connection.

I have changed the battery in the sensor and have removed and readded the sensor to the thermostat, multiple times.

No connection issue for 3 years, and suddenly in the last couple of months the connection issues start. I'm thinking that there was an update that is causing the connection loss. Can't seem to get help from Nest support.

Re: Temperature sensor does not connect to thermostat

AM22 — Mon, 14 Feb 2022 05:14:53 GMT

Our connection got lost bcoz we have to turn off the internet for quite some. This one worked for us! Thanks!

Re: Temperature sensor does not connect to thermostat

UncleCustom — Sun, 20 Feb 2022 16:23:40 GMT

This worked perfect for me,

thanks