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Question About Honeywell Thermostat TB8220U
Screen Locked...

Our heating/cooling technician set a schedule extremely cold, and then locked the screen. I know how to unlock the screen to go in and change the date, time, etc...but not to change the schedule. Please help--I'm freezing!

Asked by Jenna on 05/20/2009 3  Answers

ManualsOnline posted an answer 15 years, 5 months ago

The ManualsOnline team has found the manual for this product! We hope it helps solve your problem. Get the Manual Here

KC posted an answer 14 years, 4 months ago

5 Instead of going to mail menu by hitting the center button hold down the button to the left and right of center to get the FULL menu options. The link below is a different manuel that explains the process. http://www.aercoindustries.com/sites/aerco/files/TB8220U.pdf
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JEFF posted an answer 15 years, 4 months ago

1 UNABLE TO UNLOCK SCREEN
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