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    karmathedog's Avatar
    karmathedog Posts: 2, Reputation: 1
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    #1

    May 24, 2010, 07:13 PM
    Coleman evcon furnace pressure switch failed to close
    My Coleman Evcon furnace will not heat. I took off the cover and saw a red light flash three times indicating pressure switch failed to close. I blew into both ends of the rubber tube. I noticed a click as I blew in the direction of the pressure switch and another click as I ceased blowing. Other than that, I am out of ideas. Thanks.
    wmproop's Avatar
    wmproop Posts: 3,749, Reputation: 91
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    #2

    May 24, 2010, 07:22 PM
    Make sure the rubber hose doesn`t have any holes or cracks and that it fits tight on both end connections
    karmathedog's Avatar
    karmathedog Posts: 2, Reputation: 1
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    #3

    May 24, 2010, 07:26 PM

    Thanks for responding wmproop. The hose is in good shape and the connections are tight.
    Joshdta's Avatar
    Joshdta Posts: 2,549, Reputation: 45
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    #4

    May 25, 2010, 05:39 AM

    Take the vent motor out and check for a blockage, birds or dirt.
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