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    Niko2007's Avatar
    Niko2007 Posts: 1, Reputation: 1
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    #1

    Oct 15, 2007, 07:05 AM
    Trane XL90 Pressure Switch Error
    I tried to start up my furnace this weekend and I got 1 click and then a 2nd click and the error code for pressure switch.
    I need to know what my next step is to disgnose the problem and get it running since the temps are dropping to just above freezing at night now.
    I had the blower motor replaced 1 1/2 years ago.
    NorthernHeat's Avatar
    NorthernHeat Posts: 1,455, Reputation: 132
    Ultra Member
    		  
    #2

    Oct 15, 2007, 09:41 AM
    Something is obstructing your flue pipe, most likely something simple like leaves or a wasp nest are very common. Let us know if you find anything.
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