Covers the Restore Factory Defaults on Honeywell Smart Thermostat RTH9580WF procedure. This method does the following. First of all, it clears out all custom settings. Then, it clears the WiFi network credentials from memory. Lastly, it restores RTH9580WF back to factory default state. So, follow the steps below, to restore this remote controlled thermostat. We … Continue reading Restore Factory Defaults on Honeywell Smart Thermostat RTH9580WF