Picture of the Honeywell RTH9580WF smart thermostat, displaying its -Security Settings- screen, with the -Unlocked- button highlighted.

How to Unlock Honeywell Home Thermostat

Many Honeywell home thermostats have a lock screen mode. This  keeps anyone from messing with t-stat settings without first putting in a password.  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 unlock a Honeywell home thermostat.  Explicitly, we show this on the RTH9580WF programmable WiFi thermostat.





This demo begins with our t-stat locked.  We also assume that the t-stat is showing its  Home   page.

Picture of the Honeywell RTH9580WF home thermostat, front view after initial setup.
Honeywell RTH9580WF home thermostat, front view after initial setup.

How to Unlock Honeywell Home Thermostat, 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 t-stat is locked, the   MENU  button still works.

This then displays the main menu page.  Keep in mind that you might have to press the down-arrow button several times to reach the Security Settings option.

The next picture shows the main menu, already scrolled, to show the   Security Settings   item.

Picture of the thermostat displaying its main menu, with the -Security Settings- option highlighted. How to Unlock Honeywell Home Thermostat.
The thermostat displaying its main menu, with the -Security Settings- option highlighted.

2. Tap the   Security Settings  Option

A password protected Honeywell home thermostat then shows the   Please enter your password   prompt screen, as shown next.

Picture of the -Please Enter Your Password- screen, with no passcode entered yet.
The -Please Enter Your Password- screen, with no passcode entered yet.

3. Enter the Pass Code

Enter the code you assigned when you set up the password.  In this scenario, our security code was 2752.  So, we used the up and down arrows above and below each number position to enter the correct digit for each position.





This is shown in the next screenshot.  Again, unlocking allows access to the Security Settings menu. There you can either fully unlock, partially lock, or remove the password altogether.

Picture of the -Please Enter Your Password- Screen, with passcode 2752 entered.
The -Please Enter Your Password- Screen, with pass code 2752 entered.

4.  Press the   Done   Button to Continue with How to Unlock Honeywell Home Thermostat

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.

Picture of the -Security Settings- screen, showing the -Remove Password- button with the -Change Lock Mode- button highlighted.
The -Security Settings- screen, showing the -Remove Password- button with the -Change Lock Mode- button highlighted.

5. Tap the  Change Lock Mode   Button

This again displays the   Change Lock Mode    screen, that shows the  Fully Locked   option highlighted in blue.

Picture of the -Security Settings- screen, with the -Unlocked- button highlighted. How to Unlock Honeywell Home Thermostat.
The -Security Settings- screen, with the -Unlocked- button highlighted.

6. Tap the  Unlocked  Button

This unlocks the Honeywell home thermostat and returns you to the  Security Settings  screen, as shown next.

Picture of the -Security Settings- screen, with the -Previous Menu- button highlighted.
The -Security Settings- screen, with the -Previous Menu- button highlighted.

7. Tap the   Previous Menu   Button

This returns you to the  main menu as shown next.  Note that all menu items are now available.  Verify this by scrolling down through them.  If you see the following items such as…

  • Create Schedule.
  • Color Themes.
  • Preferences.
  • Temporary Schedule Changes.
  • WiFi Setup.
  • System Setup.

If you do see these, then you have successfully unlocked your Honeywell home thermostat.

Picture of the unlocked form of its -Main Menu- screen, scrolled down to show unlocked options.
The unlocked form of the-Main Menu- screen, scrolled down to show unlocked options.

8. Done with How to Unlock Honeywell Home Thermostat !

You are now free to change any setting you wish on the main menu.  Thermostat unlocking is now complete.





Related Posts to How to Unlock Honeywell Home Thermostat

  1. How to Lock a Honeywell Thermostat

References for How to Unlock Honeywell Home Thermostat

  1. Locked out of RTH9580WF, now what?   from ThermostatForums.com

Revision History

  • 2021-08-28: Posted for the first time.
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