This post gives the factory reset Honeywell Home thermostat routine. We show this on the RTH9580WF Home thermostat, and this method does the following. First, it erases out all custom settings. Then, it Factory Resets the network the thermostat connects to to none. Finally, it restores the thermostat back to factory default state. So, follow … Continue reading Factory Reset Honeywell Home Thermostat