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My Honeywell commercial thermostat has been locked and I do not know how to unlock it. It says on the screen "screen locked" Please help! My employees and I are freezing!

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  • 182 Answers

Do you know the model number?

Posted on Dec 30, 2010

  • Tim Dehnke Dec 30, 2010

    don't know if this is your t-stat but, I am sending the link for you to look at and maybe it will help.
    http://www.air-n-water.com/manuals/tb722...

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How to unlock screen


Change battery located on back of thermostat??

Go to google
Search for your model number 1234XX .pdf
Add .pdf in search parameter.
Honeywell posts most their thermostat manuals.
Open pdf file, and then Use Ctrl+F for search feature
Word-Search manual

To find model number on thermostat, remove from wall.
Model number appears on back.
Don't forget to replace battery while you have back exposed.
Dead battery can also cause lockout and malfunction

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My thermostat is not working. It might be locked. It's blinking with all of the information it holds flashing on the screen. The part number is: tstatccnhp01-c My heat is no longer working. Can you...


Instructions
  1. 1 Unlock a partially locked screen by pressing any locked key, which will bring up the "Screen Locked" message. Next press an unlocked key, which will likely be the temperature up and down arrow keys. This will unlock the screen.
  2. 2 Press the "System" key from the home screen. Five blank touch keys, flanked by the "Done" and "Cancel" keys, will appear. Hold down the middle key for about five seconds. The Advanced Settings menu should come up.
  3. 3 Change the User Setup Number, found in the bottom left of the screen, by pressing the middle arrow keys up or down. Set the number to "0670," the universal unlock code.
  4. 4 Turn to the arrow keys on the right side of the screen. Press the keys up or down to change your options. Selecting the number "0" will unlock the screen, while choosing "1" will partially lock it. You can fully lock your screen again by selecting.


Read more: How to Unlock the Screen on a Honeywell Thermostat ' eHow.com http://www.ehow.com/how_7667347_unlock-screen-honeywell-thermostat.html#ixzz19ktDWSq8

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How to lock a Honeywell TB7220U Thermostat


With directions go to system. Then hold down 2 blanks on either side of middle for 30seconds this shows you Advanced settings . Read through and find the proper settings

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Thermostat is in the locking position, need to unlock


The Thermostat Wizard is an interactive tool that will guide you through wiring and troubleshooting your thermostat, as well as programming it to the most comfortable settings for you and your family. Simply answer the questions from the Thermostat Wizard to correctly connect, troubleshoot and/or program your Honeywell Thermostat. You can even print the instructions and bring them right to the thermostat to help make things easier.
Go to: http://yourhome.honeywell.com/Consumer/Cultures/en-US/Support/Thermostat+Wizard/

Please rate my answer!

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