How to Fix / Troubleshooting

Steps:

Review schedule: Check the programmed schedule to see if changes align with scheduled events. Adjust or disable schedule if undesired.
Check app activity: Review recent activity in the Rheem app or any linked smart home system (e.g., voice assistants) for remote changes.
Disable geofencing/auto-away: Temporarily turn off any occupancy-based features to see if behavior stabilizes.
Secure account: Change passwords and ensure only authorized users have access.
If random changes persist with all automation disabled: Perform a factory reset. Continued issues may indicate a faulty thermostat.

Thermostat randomly changes setpoints or mode without user input.

Possible Causes