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    gmurray's Avatar
    gmurray Posts: 4, Reputation: 1
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    #1

    Dec 10, 2013, 05:15 PM
    Concord 90 high efficiency condensate issue
    I have cleaned out the lines and still having the same problem of shutting off. I drain the water and it will run for a day and shut off again. I have read a answer to another post that said the installer might have installed the plumbing for the drain incorrectly. How do I know if that is true or not since I can't find any diagrams or pictures for a(12 yr old) Concord 90 high efficiency.
    ma0641's Avatar
    ma0641 Posts: 15,675, Reputation: 1012
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    #2

    Dec 10, 2013, 07:34 PM
    All condenser furnaces produce water. How is yours drained, gravity or pump?
    If water backs up. It is either a plugged drain or bad pump. Water can also flow back from a poorly sloped exhaust pipe.
    gmurray's Avatar
    gmurray Posts: 4, Reputation: 1
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    #3

    Dec 12, 2013, 12:54 PM
    Quote Originally Posted by ma0641 View Post
    All condenser furnaces produce water. How is yours drained, gravity or pump?
    If water backs up. It is either a plugged drain or bad pump. Water can also flow back from a poorly sloped exhaust pipe.
    Thanks, My furnace is a gravity type, I'm going to check the slope of the exhaust.
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