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Thread: Goodman Air Handler Jumper Wire??

  1. #1
    Join Date
    Oct 2018
    Location
    New York
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    Goodman Air Handler Jumper Wire??

    Hello,

    Got a Goodman MBVC1600AA ECM blower motor single stage AC unit no heat pump, no furnace, not even a heater kit. The instructions say to "jumper Y1 to O for proper dehumidification and ramping profile"

    First question is, what is this even used for other than ramping and dehumidification?? Instructions aren't very clear as I only have R,C,G at the circuit board Y runs through a junction box near by in the attic straight to the condenser. If I jumper Y1 to O without Y wire attached will this even do anything.

    Secondly what will happen if I don't jump it out?

    Thanks for your help.

  2. #2
    Join Date
    Jul 2013
    Location
    Richmond, VA
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    5,910
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    You aren't reading the instructions clearly. That AHU needs a call for Y to run the blower at the appropriate speed.
    Everything Im going to say today are my conclusions and my opinions, my opinions are based on my education, my training, my experience. Different people have different experiences, so they have different opinions and I make no claim that my opinion has its origin in the mind greatness. - Paul Harrell

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