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    trey262's Avatar
    trey262 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Dec 26, 2014, 11:21 AM
    Goodman PGJ0300-50
    Unit doesn't heat. Is blinking three times.how do I test the end switch?
    ma0641's Avatar
    ma0641 Posts: 15,675, Reputation: 1012
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    #2

    Dec 26, 2014, 02:17 PM
    "end switch"? Pressure switch perhaps? What does the flash code say?
    talaniman's Avatar
    talaniman Posts: 54,325, Reputation: 10855
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    #3

    Dec 26, 2014, 03:11 PM
    How to Troubleshoot the Goodman Furnace 3 Blinks | eHow

    I can only assume you checked the vents and grills first, and wiring, and hoses.

    Goodman furnace pressure switch | WebHVAC.com

    Here are a few good videos to test a pressure switch

    https://www.youtube.com/watch?v=t_dsSOdPqXw

    Or

    https://www.youtube.com/watch?v=qQ2b-DZ82Bs
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