Google Nest Community

My bedroom nest thermostat does not show up on my Nest app on my phone. When I go to add the device (already installed) in, it says to go to Settings then select Nest App (on the thermostat) to bring up the Entry Key, but on my thermostat under Setti...

My new Nest will operate perfectly for hours, then shut off the AC with e298 shown. A few hours later the system is back up and running and cooling and I did not touch a thing. This repeats several times every day.What could be a possible cause for t...