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    kmills21's Avatar
    kmills21 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Mar 20, 2007, 07:41 PM
    Honeywell Chromotherm III
    I have a 12 year old Honeywell Chromotherm III thermostat that is now showing repl batt. I replaced the 3 AA batteries w/new ones. The message was still there. I replaced them with another set. Still no change. I went through this process w/3 new sets of batteries from 2 different boxes. Am I dense or do I need a new thermostat??
    jaisen's Avatar
    jaisen Posts: 9, Reputation: 1
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    #2

    Mar 20, 2007, 09:25 PM
    You should replace it anyway now there is a chromotherm 8 I believe now. Try getting the honeywell pro 8000 with a backplate to fit that. Or a new t stat good luck. It's the stat you need to buy another.
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #3

    Mar 21, 2007, 04:00 AM
    I have a 12 year old Honeywell Chromotherm III thermostat that is now showing repl batt. I replaced the 3 AA batteries w/new ones. The message was still there. I replaced them with another set. Still no change. I went through this process w/3 new sets of batteries from 2 different boxes. Am I dense or do I need a new thermostat??

    This and other display problems happen on the old style III Honeywell. I had mine replaced years ago under warranty. Honeywell knows about the problem but I do not believe you will get a warranty replacement because of the age of your t stat
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