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