Article Summary:
When your Nest Thermostat is disconnected from the Internet, an exclamation point will appear inside the settings icon.
You can still control your heating and cooling with the thermostat, but you won’t be able to control the temperature with the Nest app. Please see the articles below for help with Internet connection issues.
Troubleshooting the Nest Learning Thermostat's Wi-Fi connection
A low battery level will cause the Nest Learning Thermostat to disconnect from the Internet
Note: This view is available on the Nest Thermostat software version 4.3 or later.