I'm trying to add my Nest E thermostat to the Nest app. 4 zone Nest E thermostats installed in 2017. Worked great for several years. First I was getting a “not Connected” message on my app for one E thermostat. It would show on sometimes and “Not Connected” other times. I removed the E from the app and tried reconnecting. No luck.
Now my second E does not connect to App by using the QR code method. I now show 3 E’s on app when I always had 4 before removing the problem one that was intermittent on the app as Not Connected.
After QR Code Activation, it simply gives me a TR0XX code and states it failed to connect to network. the Nest seems to hang, stuck in the spinning dots, and I need to do another hard reset to restart the process and seemingly get nowhere further.
Summary: Cannot connect 2 Es to App. They seem to work manually. We live 3 hours away and the average winter temperature here in the Rockies can be in negative territory. So for 5 years I would put it on Eco for weeks we are not here…now I am going to have to leave heat up for no reason other than freezing line prevention.
I've tried:
USB battery charge overnight
Switching Es to different bases.
Rebooting my phone
Hard reset (about 6-8 times) on the Nest
Phone App and E are on same network. Both the ones that have gone out are the closest to the router.
I don't know what else to even try at this point.
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