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    Bigfoot7165's Avatar
    Bigfoot7165 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Dec 20, 2008, 11:29 AM
    RTH110B Changed from F to C
    I have had mine since 09 -05 and has been working Great but yesterday it changed from F to C and I can't change it back or find were to change it back any help on this would be greatly Appreciated...
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Dec 20, 2008, 11:41 AM
    http://customer.honeywell.com/techli...0s/69-1799.pdf

    Read number 4 configuration menu. That will fix it.
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