I have had my Nest Learning Thermostat for a few years, and I have never had this issue in the past. Last night, I noticed that my thermostat was not connected to my app. When I would go to the thermostat in the Nest app, it showed offline for 6 hours. I went to the unit on the wall, restarted it, and then checked the status in the app this morning. Today it showed the thermostat was offline for 15 hours. Again, I went to the unit on the wall and confirmed that the unit was connected to the wifi and showed online. So, the unit seems to be connected to the wifi, with a signal.
It looks like I am using the Nest app version 5.69.1.1. I also have the Google Home app, but as you will see below, I removed the thermostat in the Nest app, and I can't get an entry key to add it back on. I did not look in the Google home app prior to removing the device in the Nest app. So, I cannot say if the device was in my Google Home app or not. I do believe it was there in the past, but I cannot confirm.
My other Google/Nest devices are connected and working (Google Hub Max and Doorbell). I confirmed both are working in the Nest app and the Google Home app. Also, they are on the same wifi as the thermostat.
In technical info I see I have:
Software version 5.9.4-5 (shows updated 9/24)
Model Display -2.6
Base: SW ver 4.28 /3.1Backplate-2.5,
I have confirmed there is a wifi signal on the thermostat. I can see my local IP address, and I see the response under wifi that I am receiving a ping signal (42051 ms ping), and my signal strength 66.
I have taken many steps to try to get it connected.
I have restarted the thermostat base unit. After restarting, everything looks to be working correctly on the base unit. Including all connections above. I have restarted my router and have confirmed my 24g wifi signal is working and has a solid connection through speed apps on my phone (standing next to the thermostat).
I have updated the software on the base unit. I can see that the last data upload was today at 7:09 am (this was when I did the software update). Also shows that the last cloud comm was today at 1:50 am.
I completely deleted the app from my phone and reloaded it. After reinstalling, I had the same result with the thermostat still shows not connected. I removed the thermostat device from the app. When I tried to set up the thermostat device again on the app, I found the issue that I couldn't get an entry key. On the base unit, I go to the screen to get an entry key, and it shows that the unit is trying to get an entry key, but the request either times out and goes back to the home screen or shows cannot connect to the internet (or something similar, can't remember exactly, but shows a connectivity issue). When it showed it could not connect, I immediately went to the tech info screen, and the unit showed it was online with an IP address and ping info. Since I cannot get an entry code, I can't add the device back to my app.
Any suggestions or help would be greatly appreciated.
