Page 2 of 2 FirstFirst 12
Results 14 to 21 of 21
  1. #14
    Join Date
    Apr 2010
    Location
    Winnipeg,Manitoba,Canada
    Posts
    128
    yes have had this. Only happens once and a while. Windings inside the motor are faulty. Like others had stated it will show up when you ohm it out.

  2. #15
    Join Date
    Aug 2004
    Location
    Chapel Hill
    Posts
    79
    Quote Originally Posted by ryan79 View Post
    yes have had this. Only happens once and a while. Windings inside the motor are faulty. Like others had stated it will show up when you ohm it out.
    ok, i will keep that in my mind. I have throw away the bad motor already. otherwise i will ohm it out.

  3. #16
    Join Date
    May 2011
    Location
    Western, KY
    Posts
    3,105
    Quote Originally Posted by jcrew4242 View Post
    ohm all 4 wires? what is the ohm going to help me with the problem?
    There's actually only three that matter, one of the browns/ the brown with white stripe is actually connected to one of the wires going to the contactor, usually white.

    You ohm it because you can ohm it just like a compressor, it will give you more info than you had before, plus I'm just always curious, if something fails I want to know why.

  4. #17
    Join Date
    Aug 2004
    Location
    Chapel Hill
    Posts
    79
    ok, R, C , S
    i got it, thanks mason

  5. #18
    Join Date
    Aug 2004
    Location
    Chapel Hill
    Posts
    79
    Quote Originally Posted by mason View Post
    There's actually only three that matter, one of the browns/ the brown with white stripe is actually connected to one of the wires going to the contactor, usually white.

    You ohm it because you can ohm it just like a compressor, it will give you more info than you had before, plus I'm just always curious, if something fails I want to know why.
    I think you mean the white, black and solid brown wires..... correct me if i am wrong.

  6. #19
    Join Date
    Sep 2012
    Location
    New York
    Posts
    174
    This same thing happened to a fellow tech of mine. He replace the motor for the second time and had a senior tech come out to see if he could find the problem... It was solved with buying a different blade that pitched the other way so it was never really solved lol. I can't believe that two oem motors spun the wrong way to this day has me stunped

  7. #20
    Join Date
    May 2011
    Location
    Western, KY
    Posts
    3,105
    Quote Originally Posted by jcrew4242 View Post
    I think you mean the white, black and solid brown wires..... correct me if i am wrong.
    Right, I'm saying one of the browns that is often marked with a white stripe is connected to one of the contactor wires, usually white, so we don't care about that one.

    R-S-C, exactly

    Same is true of the multi speed blower motors. The other day I installed one(230v) and when I started wiring it up I realized that I hadn't checked to see what the dedicated line wire was, I knew what speed to use, I ohmed the other wires until I found the one that was connected to the run cap lead, problem solved, it was yellow by the way, sometimes you get wierd colors.

    On ECM motors, the actual motor body, it's three phase just like three phase compressors, you ohm the windings and all readings should be the same.

  8. #21
    Join Date
    Aug 2004
    Location
    Chapel Hill
    Posts
    79
    Thanks for the tips, mason

Page 2 of 2 FirstFirst 12

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Comfortech Show Promo Image

Related Forums

Plumbing Talks | Contractor Magazine
Forums | Electrical Construction & Maintenance (EC&M) Magazine
Comfortech365 Virtual Event