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-   -   Outside fan unit runs while ac is not on? (https://www.askmehelpdesk.com/showthread.php?t=471836)

  • May 19, 2010, 03:26 PM
    bigdog50
    Outside fan unit runs while ac is not on?
    Xb1000 trane ac... The fan unit outside runs constant, even after a new contactor installed.. any help?
  • May 19, 2010, 06:38 PM
    wmproop
    Something, possibly low voltage wires might be shorted sending power at all times to the contactor, or maybe start at tstat,, disconnect the yellow wire which should be sending signal to ac,, does it still run?
  • May 23, 2010, 02:15 PM
    kolsasha
    I do have same issue, bought new condenser and new contactor, but still same issue. Contactor is open but fan still turning and when AC starts fan start turning opposite direction.
    Please help
  • May 23, 2010, 02:22 PM
    bigdog50

    I had a tech check it out. Found the fan motor was bad. I am going to replace motor to see if it fixes the problem.
  • May 23, 2010, 05:19 PM
    kolsasha

    Please let me know, if that will help I will do the same
    Thank you so much
  • May 23, 2010, 05:30 PM
    Joshdta

    The fan motor is bad! About $75 for a new one
  • May 23, 2010, 05:39 PM
    kolsasha

    Good, for you, motor for my AC unit is around 130.00.
    Will order tomorrow.
    MOT08896
    7b0030B100A1
  • May 23, 2010, 06:14 PM
    Joshdta
    Quote:

    Originally Posted by kolsasha View Post
    good, for you, motor for my AC unit is around 130.00.
    Will order tomorrow.
    MOT08896
    7b0030B100A1

    No way a fan motor should cost $130 plus inless it is some special 2 speed motor, or is a huge motor.. What size ac you have?
  • May 23, 2010, 06:25 PM
    kolsasha

    This is what I have:
    AC Unit: 7B0030B100A1
    Motor: MOT08895
    1/4 HP, 20/230/60/1, 1100 RPM, TYPE PSC, 42 FRAME, CCW BALL Bearing, 5.0 MFD @370V

    Thank you for your help
  • May 23, 2010, 06:28 PM
    Joshdta

    What brand is it?
  • May 23, 2010, 06:31 PM
    kolsasha

    American Standard INC. Unit made in 2000
    Thank you
  • May 23, 2010, 06:34 PM
    Joshdta

    That's why, trane and american standard are way over priced, you should be able to pick up a universal motor for around $65 to $85 Brands like a. o smith
  • May 23, 2010, 06:41 PM
    kolsasha

    But how to do cross reference and will it fit my current unit? Shift size for fan, screw holes..
    What generic brand would you recommend?

    Thank you again
  • May 27, 2010, 06:53 PM
    bigdog50

    Fan motor replaced... runs great
  • May 27, 2010, 07:42 PM
    Missouri Bound
    A "bad" motor won't run continuously... it's the control that was the problem. Someone misled you on the cause of the problem... then charged you for something you probably didn't need.

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