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

    May 12, 2013, 12:21 PM
    Thermostat problems
    I just recently tried to replace my digital thermostat for my furnace/central air. It is 5 wire system. I could not get a lit display. Does the power come from the furnace? It appears I somehow lost the
    24 VAC power on the wire labeled R. Is it possible I crossed wires that could have tripped a breaker in the furnace. The furnace is a newer Coleman (2 years old) that is installed in the attic.
    Unfortunately I have no A/C right now and it is quite warm where I am at.
    Grady White's Avatar
    Grady White Posts: 1,417, Reputation: 59
    Ultra Member
    		  
    #2

    May 12, 2013, 06:14 PM
    If you did not turn off the power to the furnace, there's a good chance you've blown a fuse on the furnace control board.
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