Question about Honeywell Electronic Programmable Heat/Cool Thermostat - CT3300A100 Heater

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Unlock a Honeywell Thermostat

Please help us unlock the system so we can over ride the temperature setting. We do not have the manual and the instructions say we can push the Override button, then the + key to adjust the temperature, but nothing happens. Please help.

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That is correct hold the override button and the + button for a few seconds. Then you will see it flash and you can change the temperature then

Posted on May 28, 2009

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3 Answers

Need to change thermostat from Celsius to Fahrenheit


The first link is operators manual.

The second is installation and contains the procedure to set many functions including the display temperature.

https://customer.honeywell.com/resources/techlit/TechLitDocuments/69-0000s/69-2577ES.pdf

See page 15 function set 14. This sets F or C temperature
https://customer.honeywell.com/resources/techlit/TechLitDocuments/69-0000s/69-2578ES.pdf

hope this helps?
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1 Answer

How do you unlock it?


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https://www.youtube.com/watch?v=ofenS8mOJDs
Oct 18, 2010 - Uploaded by Sherlock Homes Austin
If you've just bought a new David Weekley Home at Mueller, youmay ... How do I "factory reset" the th8320zw honeywell thermostat? ... Would that be the same for Trane thermostats? ...is there a way to unlock the screen?.

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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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Go to the following link and look at page 12 of the pdf file. It explains how to access the settings so you can unlock the thermostat. Hope this helps.
http://www.ntsupply.com/files/products/TB7220_data.pdf

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Honeywell Thermostat Lock Cover


Go to honeywell.com
Under red welcome sign
Bottom red highlighted box literature/image search
Type in thermostat model number
Click on arrow to right
Then click on the PDF files owners manual / installation instructions
If you can’t find what you want, the bottom left and bottom of web
Page, they have homeowners assistance and Home products to get the help you need.

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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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