How to Fix / Troubleshooting

Steps:

Check signal strength: On the thermostat or in the Rheem app, view Wi-Fi signal strength. If low, consider moving the router closer or adding a Wi-Fi extender.
Use 2.4 GHz band: Many smart thermostats prefer 2.4 GHz. Ensure your SSID is broadcasting 2.4 GHz and that the thermostat is connected to it.
Reduce interference: Keep the router away from microwaves, cordless phones, and thick metal objects.
Update router firmware: Install any available updates for your router.
If only this device has issues and others are stable: The thermostat's Wi-Fi radio may be failing; replacement may be necessary.

Thermostat frequently disconnects from Wi-Fi or shows poor signal strength.

Possible Causes