How do I manually set the Date/Time and related options like Time Zone and DST?
FAQ , Thermostats , Troubleshooting Modified: March 19, 2026
To manually change Date/Time options, the S40 Thermostat must be disconnected from Wi-Fi. To do this, go to Menu > System Settings > Wi-Fi and slide Wi-Fi to OFF. Press the Home button to return to the main screen. Now go to Menu > Display Settings > Date & Time > Select Set Time or Set Date to make changes.
Remember to re-enable the Wi-Fi by going to Menu > System Settings > Wi-Fi and slide Wi-Fi to ON. Press the Home button to return to the main screen. The manual changes will be saved.
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