Lost WI-FI Connection

Yes, once your router comes back online, your thermostat will connect to the router.
If your Wi-Fi connection is restored and your router and its password are the same, your thermostat will automatically reconnect.
Yes, the thermostat will operate the heating and/or cooling system with or without Wi-Fi. Losing your Wi-Fi connection will not prevent the thermostat from running schedules – it will just prevent control over the thermostat from a mobile device until the connection is restored.

If you know your thermostat model number, follow the directions for Clearing the Router Setting in your owner’s manual, or find the directions below.

If you do not know your thermostat model number, find it here

Select the Quick Start Guide for your device and follow the instructions in the "Connect your Wi-Fi Thermostat to Your Home Network" section.