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How do I ''Replace the Battery'' on a Honeywell 97-3893 Thermostat. The unit is blinking ''replace battery'' and I don't want to force opening anything.

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The unit has a split line where to top meets the base plate pull on the bottom side with your fingernails at the split line and it will pop free it will take some force batteries are accessable after that, just line up and push to reinstall

Posted on Jul 10, 2009

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Posted on Jan 02, 2017

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1 Answer

My Honeywell Themostat is no longer controlling the systems after a battery change, but otherwise looks fine. Help!


The replacement batteries could be defective or installed incorrectly. Also, if the thermostat has to be removed from its mounting base for installation of replacement batteries, it may have been reinstalled incorrectly.

Nov 07, 2015 | Honeywell Heat/Cool Thermostat

1 Answer

Thermostat


Add a comment and describe brand, type and model of product. And what this product does. Is this a thermostat?
Also say if this is new installation or older installation
If you have Honeywell thermostat, then model number and AA battery are located on back of device. Replace battery.
Web search your model number and include .pdf in search parameter to obtain product manual, Use Ctrl+f to word-search manual for troubleshoot section. And view manual for illustrations showing location of battery.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Apr 25, 2013 | Honeywell TH5110D1022 Focus PRO 5000...

1 Answer

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

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Apr 18, 2013 | Honeywell TB8220U1003 Commercial Vision...

1 Answer

The thermostat for the main zone in my house (honeywell model RTH5100B1017) is battery powered and it blinked change the battery for a couple of daye and then went blank. I have changed the batteries twice...


  • Check any batteries and replace if needed. Ensure that you use only AA alkaline, nonrechargeable batteries.
  • 2 Check for oxidation buildup on battery contacts. Use electrical contact cleaner and carefully clean the battery contacts of any oxidation buildup.
  • 3 Reset the system switch.


  • Read more: How to Troubleshoot Honeywell Thermostats ' eHow.com http://www.ehow.com/how_6596826_troubleshoot-honeywell-thermostats.html#ixzz17aWIl2Xt

    Dec 09, 2010 | Heating & Cooling

    2 Answers

    Everytime i replace the battery in my thermostat it says low battery


    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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    I replaced the battery to honeywell RTH230B. Heat won't turn on.


    I followed a comment from a previous source and reversed the polarity of the batteries. I then flipped them back to the correct position and the flashing battery indicator went away and the thermostat functions correctly.

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    Anyone have any answers

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    Honeywell T8411R 1028No power to the thermostat; breakers are not


    site shows this thermostat is a non programmable unit and has been discontinued. none of the info sheets including a pdf shows a replacement battery. this thermostat operates off line voltage only. check for a control fuse or breaker on your heating unit.

    Oct 17, 2009 | Honeywell Programmable Thermostat Heater

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    Honeywell CT200A thermostat battery will not recharge.


    Yes the battery charge circuit is burned out, you might as well replace the thermostat, parts will not be made to fix it unless it is still under warranty.

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