Open the Lyric app, select the menu button in the top left corner. Select Thermostat Name for the thermostat that needs to be reconnected to the home WiFi network. Then select Thermostat Configuration and Reset WiFi. On the thermostat display, press and hold the Weather button for approximately five seconds. Highlight WiFi and select OK. Then highlight Setup and select OK. Press GO on the thermostat when instructed within the Lyric app. The app will guide you through the remaining steps.