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

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How to lock a Honeywell TB7220U Thermostat

I have a commercial Honeywell TB7220U Thermostat and would like to know how to Lock/Unlock the keyboard. Thanks.

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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

Posted on Jul 04, 2009

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How do I lock keys on TB7220U? The previous advice did not work - there are no blank keys.


Access the ISU (installer setup) menu by pressing the system key from the main screen then press and hold the two keys on either side of the center for approximately five seconds. Hit next until you find 0670 and then change the value to 4. http://www.forwardthinking.honeywell.com/related_links/thermostats/commercial_pro/install/62_0221.pdf On a side note, this information was insanely hard to find.

Nov 15, 2010 | Honeywell Electronic Programmable...

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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/

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Mar 04, 2009 | Honeywell Electronic Programmable...

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Unlocking a HoneyWell T7300B1003 Thermostat


Set keyboard lock out DIP switch 1 to off. Pg. 16 in the isstructions

Jan 05, 2009 | Honeywell Programmable Thermostat Heater

2 Answers

Unlock t7300 thermostat


here's a link to the installation instructions.  i don't see where there's a lock/unlock feature, maybe these will help. T7300

Dec 01, 2008 | Honeywell Heating & Cooling

1 Answer

Honeywell Commercial PRO TB7220U Touchscreen Programmable Thermostat wont come off screen lock and we wanna turn on air conditioning... how do you shut off screen lock?


That one is fun. Touch the system cycle button. then touch the two spaces on both sides of the center button at the bottom hold them down at the same time. After 5-10 seconds the screen should flash and show numbers int the center of the screen touch the screen til the numbers 670 appear. then change the numbers beside it to 0. then click done. now you should be able to adjust temperature as needed

Apr 13, 2008 | Heating & Cooling

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