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

    Aug 2, 2010, 02:08 PM
    How do I wire up my new air conditioner condenser fan motor?
    I just purchased a "universal" replacement motor for my condenser fan motor. The bearings are starting to go out on the old fan and periodically they scream for about a minute when the a/c starts. The old motor had only 3 wires, black, brown, and orange. The black is connected to a brown box with 6 wires already connected to it, I believe this is a contactor, just a guess. The brown and orange are connected to different connectors on 2 of 3 prongs of a capacitor. The new has 5 wires... brown, brown/wht stripe, black, red, and white. The motor shows a wiring diagram for replacing 4 and 3 wire motors. On both diagrams the red wire appears to be connected to nothing, there is a line labeled RED LOW that goes to a small circle. For the 3 wire diagram it also shows a line labeled brown/wht that goes to a circle, again goes to nowhere. The black goes to a circle labeled HI, there is a line on the other circle that with an arrow at the end pointing to the top of the digram, this line is labeled "LINE"(?). The white wire goes to one side of a capacitor and the brown to another tab on the same capicitor. The drawing also indictes a leg coming off the white tha goes somewhere? The afore mentioned arrow points at this leg. Should a connect the new black to the same location as the old black... run the white to where the old orane use to go... run the brown to where the old brown use to go... and cap and tape off the brown/wht and red? Any help would be appreciated. Thanks
    Stratmando's Avatar
    Stratmando Posts: 11,188, Reputation: 508
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    #2

    Aug 2, 2010, 03:35 PM

    Can't give an exact answer, but I think the red is not needed unless you need a lower speed.
    The White May not be needed.
    It is possible 2 wires are swapped to reverse direction. Is that on the diagram?
    abtcj's Avatar
    abtcj Posts: 2, Reputation: 1
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    #3

    Aug 2, 2010, 06:49 PM

    Actually there is a couple of other leads that come out of the motor and just by simply reversing a plug one would change the rotation. On the wiring diagram on the side of the motor I have fairly surely reasoned that the red lead is for a low speed hook up. My condenser just has one speed capability, but I am sure this motor is set-up so that it may be run in 2 speeds. That is why I believe the red wire has no purpose in my application. Any other help would be appreciated.
    KISS's Avatar
    KISS Posts: 12,510, Reputation: 839
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    #4

    Aug 2, 2010, 07:40 PM

    Your first post is a bit confusing, but let me attempt to shine some light, but not deceifer.

    1. Since the new motor is 2 speed, loose a wire when replacing a one speed motor.

    Note on 3 and 4 wire motors. With a 4 wire motor, 2 wires go to the SAME place. 3 wire motors cost a few pennies less.

    The 4 wire motor is seemingly easy. 2 wires are line. 2 wires are the capacitor.

    The 3 wire motor, one of the wires is (LINE and Cap), the other is Cap, and the third is the speed.

    The LINE & CAP wires are brought out separately in the 4 wire motor.

    What confuses things even more is that the compressor and the fan both need capacitors. It's cheaper for the OEM to use a dual capacitor and easier for the service tech to use two separate ones.
    michael12._3's Avatar
    michael12._3 Posts: 1, Reputation: 1
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    #5

    Aug 21, 2011, 09:56 AM
    I have a GE Commercial motor that is the model of 5KCP39FGM599S,HP1/4.v208-230,rpm1075 it has four colors yellow, brown with white strip and brown,black I need to know where to connect the wires
    Stratmando's Avatar
    Stratmando Posts: 11,188, Reputation: 508
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    #6

    Aug 21, 2011, 09:59 AM
    May be a diagram on the Motor, brown and brown/white may be for capacitor?

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