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    almost9's Avatar
    almost9 Posts: 4, Reputation: 2
    New Member
     
    #1

    Mar 12, 2010, 01:43 AM
    Emerson motor condenser wiring replacing 3 wire motor with 5 wire.
    Any recommendations? New motor apparently is capable of running in either direction by switching brown and purple wires going to the capacitor. Looks like then either the remaining brown or purple is spliced to or hooked up to the same terminal as the yellow. Thanks.
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
     
    #2

    Mar 12, 2010, 01:45 AM
    Quote Originally Posted by almost9 View Post
    Any recommendations? New motor apparently is capable of running in either direction by switching brown and purple wires going to the capacitor. Looks like then either the remaining brown or purple is spliced to or hooked up to the same terminal as the yellow. Thanks.
    Follow the directions that come with the motor since you provided no other information to go by.
    almost9's Avatar
    almost9 Posts: 4, Reputation: 2
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    #3

    Mar 15, 2010, 04:03 PM

    Thanks but the only directions were the wiring diagrams for 3/4 wire hook ups each showing cw c/cw.

    I put the black on the control relay, orange and brown ones the capacitor terminals, same as the old 3 wire motor. Purple went on same terminal as the orange and yellow on brown terminal.

    Works great now and I can tell it's now moving more air than the old motor.
    almost9's Avatar
    almost9 Posts: 4, Reputation: 2
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    #4

    Mar 17, 2010, 10:13 AM
    I wanted to update my repair. The next morning the new motor wasn't starting. Suspected a new capacitor was also needed. While reviewing the wiring print to get the capacitor specs realized I'd misunderstood the diagram. Reconnected the right way and now working well.

    Old 3 wire motor:
    Black to control relay.
    Orange to capacitor.
    Brown to capacitor.

    New 5 wire motor:
    Black to control relay.
    Orange to capacitor.
    Purple to capacitor.
    Brown and Yellow connected to each other and isolated from circuit.
    dgarrigus's Avatar
    dgarrigus Posts: 2, Reputation: 1
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    #5

    Aug 21, 2010, 01:20 PM
    Where does the white wire go
    dgarrigus's Avatar
    dgarrigus Posts: 2, Reputation: 1
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    #6

    Aug 21, 2010, 01:22 PM

    Where does the white wire go

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