Shows how to lock and unlock Honeywell Home thermostat on Honeywell's RTH9580WF smart WiFi thermostat. Lock to prevent settings tampering.. Not sure how to unlock the screen on your Honeywell thermostat? Honeywell Home Support explains how to unlock your thermostat screen using a passcode.
A locked thermostat is annoying, but how do you unlock it To unlock a touchscreen Honeywell thermostat, it's best to follow the instructions in your owner's manual. The most common unlocking procedure involves going to the lock screen, pressing in the proper key code, and press "SELECT.". Want to keep people from changing your thermostat settings? This support article will guide you through how to lock your specific Honeywell thermostat device.