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    KISS's Avatar
    KISS Posts: 12,510, Reputation: 839
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    #21

    Oct 27, 2009, 08:35 PM

    Yipes!

    AOSmithmotors are in TN (800) 672-6495. Give them a call.

    Ask them specifically which capacitor wire Brn or Brn/wht is the same as the Black or the yellow line wire?

    Tell them, you cannot find the info on their website. A.O.Smith Electrical Products Company

    One of the brn or brn/wht wires you will not be using.

    With a good ohmmeter, you should be able to tell as well.

    The nameplate may also show it. Can you post a picture of the nameplate?
    czadna's Avatar
    czadna Posts: 17, Reputation: 1
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    #22

    Oct 28, 2009, 06:05 AM

    What kind of resistance should I be reading for each wire?
    KISS's Avatar
    KISS Posts: 12,510, Reputation: 839
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    #23

    Oct 28, 2009, 10:29 AM

    Low, like a few ohms or less. One very low. Lead resistance can be a problem too.

    ... black yel
    Brn
    Brn/wht

    Fill in the table.
    czadna's Avatar
    czadna Posts: 17, Reputation: 1
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    #24

    Oct 28, 2009, 11:00 AM
    Is the brn wire with the lowest resistance the winner?
    KISS's Avatar
    KISS Posts: 12,510, Reputation: 839
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    #25

    Oct 28, 2009, 12:40 PM

    That's the one to leave out and cap.
    czadna's Avatar
    czadna Posts: 17, Reputation: 1
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    #26

    Oct 28, 2009, 12:49 PM
    Quote Originally Posted by KeepItSimpleStupid View Post
    That's the one to leave out and cap.
    Thank you so much for your help!
    I wish I could afford to reward you for your time.
    czadna's Avatar
    czadna Posts: 17, Reputation: 1
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    #27

    Oct 28, 2009, 08:22 PM

    I capped the BRN/WHT wire & my a/c is working again. Thank you all for your help!
    czadna's Avatar
    czadna Posts: 17, Reputation: 1
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    #28

    Oct 29, 2009, 03:58 PM
    FYI: This is what AO Smith said: "To change to a 3-wire hook-up: The brown/white wire and yellow wire are connected together internally. As a result, you need to cap off the brown/white lead and connect the yellow lead to the capacitor. Yellow is the line lead."
    Attached Images
  1. File Type: pdf F48K93A01 Connection Diagram.pdf (765.5 KB, 220 views)
    2. KISS's Avatar
    KISS Posts: 12,510, Reputation: 839
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    #29

    Oct 29, 2009, 04:53 PM

    I assumed you didn't own a multimeter. So, you got two ways to solve the same problem. That motor has come up before on AMHD and it was difficult then to get information from AO Smith's website.

    Like the old saying goes "More than one way to skin a cat".
    czadna's Avatar
    czadna Posts: 17, Reputation: 1
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    #30

    Oct 29, 2009, 06:10 PM

    I have a nifty Snap-On tool box that came with a nice multi meter
    benconsult's Avatar
    benconsult Posts: 2, Reputation: 1
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    #31

    Oct 2, 2010, 09:09 AM
    So czadna, I have the same situation: replacing a three wire A.O. Smith with a four wire. Point of clarification: do you mean I should connect yellow to the brown&white, or they are already connected internally, and I should leave brown&while off the wiring, and just use yellow for the power and capacitor like red was in my original installation?
    Stratmando's Avatar
    Stratmando Posts: 11,188, Reputation: 508
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    #32

    Oct 2, 2010, 09:57 AM

    benconsult, did you click on the link czadna showed in his post?
    benconsult's Avatar
    benconsult Posts: 2, Reputation: 1
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    #33

    Oct 2, 2010, 12:11 PM

    Ah! The way my Google search turned up this thread gave me this address, that omits czadna's link:

    https://www.askmehelpdesk.com/advice/t-409837.html

    Much better now that I have the full info. Thanks!
    Stratmando's Avatar
    Stratmando Posts: 11,188, Reputation: 508
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    #34

    Oct 2, 2010, 12:43 PM

    https://www.askmehelpdesk.com/heatin...-409837-3.html
    Then scroll down to Oct 29, 5:58 PM(czadna's post) and that link has the diagram.
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