Explains reset Honeywell Programmable thermostat details. We demonstrate these on the RTH9580WF model. This method does the following. First of all, it clears out all custom settings. Then, it Resets the wireless network settings. Finally, it restores the thermostat back to factory default state. So, follow the steps below, to hard Reset most any Honeywell … Continue reading Reset Honeywell Programmable Thermostat