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    CMac622's Avatar
    CMac622 Posts: 1, Reputation: 1
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    #1

    Mar 6, 2012, 05:25 PM
    Red light flashes seven times in coleman furnace?
    I just changed air filter. Could a dirty air filter have caused this? If so how do I reset. I don't see a reset button
    ballengerb1's Avatar
    ballengerb1 Posts: 27,378, Reputation: 2280
    Home Repair & Remodeling Expert
    		  
    #2

    Mar 6, 2012, 05:47 PM
    You should see a decal or listing on the inside of the furnace door that tells you the codes. Coleman Furnace Diagnostics
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