Diagnosis
The thermostat is experiencing a persistent Wi-Fi provisioning failure, often due to interference or an IP address conflict.
How to Fix It
In the Resideo app, remove the thermostat from your home. On the thermostat, navigate to Menu > Preferences > Wi-Fi > Forget Network. Reboot your router. Re-provision the thermostat to your 2.4 GHz network using the app, ensuring you are within 15 feet of the router during setup.
If That Didn't Work
The issue may be specific to certain router brands or mesh systems. Assign a static IP address to the thermostat within your router's settings using its MAC address (found in Menu > Information > Network).
Heads Up
The T10 Pro only connects to 2.4 GHz networks. If your router broadcasts a combined SSID for 2.4/5 GHz, some devices struggle. Create a separate, dedicated 2.4 GHz SSID for the thermostat.