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    lynni5's Avatar
    lynni5 Posts: 3, Reputation: 1
    New Member
    		  
    #1

    Apr 20, 2008, 10:27 AM
    Chronotherm III flashing display
    My older Honeywell Chronotherm III thermostat is flashing. I have replaced the batteries and tried to reprogram but it won't let me do anything, it just flashes the present hold temperature setting.

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    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Apr 20, 2008, 11:28 AM
    Remove stat from wall. Remove batterys from stat. Make sure batterys are good. After a few minutes replace batterys CORRECTLY + and - and try to program stat. Replace stat on wall. If that does not work it might be time for a new stat.


    http://www.gogeisel.com/geiselonline...well/T8621.pdf




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