Many Honeywell home thermostats have a screen locked mode. This keeps anyone from changing thermostat settings without first entering a password. First, you set this pass code when locking your t-stat. Then, to unlock it, the t-stat asks you to enter this secret code to again have full control over settings such as WiFi, temperature, scheduling, and other HVAC settings. So here we explain how to reset the Honeywell thermostat screen locked condition. Explicitly, we show this on the RTH9580WF programmable WiFi thermostat.
This demo begins with our thermostat screen locked. We also assume that the t-stat is showing its Home page.
How to Solve a Honeywell Thermostat Screen Locked Situation, Step by Step
1. On the Home Screen, Tap the MENU Option
Find the MENU button in top right corner of that page. Note that even when the thermostat screen is locked, the MENU button still works.
This then displays the main menu page. Moreover, keep in mind that you might have to press the down-arrow button several times to reach the Security Settings option.
E.g. The next picture shows the main menu, already scrolled, to show the Security Settings item.
2. Tap the Security Settings Option
A Honeywell thermostat with its screen locked then shows the Please enter your password prompt screen, as shown next.
3. Enter the Pass Code
Enter the code you assigned when you set up the password. In this demo, our security code was 2752. So, we used the up and down arrows above and below each number position to enter the digits we want for each position.
This is shown in the next screenshot. Again, unlocking the screen allows access to the Security Settings menu. There you can either fully unlock, partially lock, or remove the password altogether.
4. Press the Done Button to Continue with Honeywell Thermostat Screen Locked Resolution
Tap Done once you’ve punched in the pass code, the thermostat then shows the Security Settings screen, as shown next.
From here, you could choose either of the following.
- Delete the Security Settings password.
- Change the lock mode while leaving the existing password in place.
You need not remove the password to unlock the home thermostat. Nor must you change the lock mode in order to remove the password.
5. Tap the Change Lock Mode Button
This again displays the Change Lock Mode screen, that shows the Fully Locked option highlighted in blue.
6. Tap the Unlocked Button
This unlocks the Honeywell thermostat screen and returns you to the Security Settings screen, as shown next.
7. Tap the Previous Menu Button
This returns you to the main menu as shown next. Note that all menu items are now available. Check this by scrolling down through them. If you see the following items such as…
- Create Schedule.
- Color Themes.
- Temporary Schedule Changes.
- WiFi Setup.
- System Setup.
If you do see these, then you have successfully unlocked the screen on your Honeywell thermostat.
8. Done with Honeywell Thermostat Screen Locked Resolution !
You are now free to change any setting you wish on the main menu. Thermostat unlocking is now complete.
Related Posts to Honeywell Thermostat Screen Locked
References for How to Unlock Honeywell Home Thermostat
- 2021-09-04: First published.