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    bigdog50's Avatar
    bigdog50 Posts: 3, Reputation: 1
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    #1

    May 19, 2010, 03:26 PM
    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?
    wmproop's Avatar
    wmproop Posts: 3,749, Reputation: 91
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    #2

    May 19, 2010, 06:38 PM
    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?
    kolsasha's Avatar
    kolsasha Posts: 6, Reputation: 1
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    #3

    May 23, 2010, 02:15 PM
    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
    bigdog50's Avatar
    bigdog50 Posts: 3, Reputation: 1
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    #4

    May 23, 2010, 02:22 PM

    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.
    kolsasha's Avatar
    kolsasha Posts: 6, Reputation: 1
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    #5

    May 23, 2010, 05:19 PM

    Please let me know, if that will help I will do the same
    Thank you so much
    Joshdta's Avatar
    Joshdta Posts: 2,549, Reputation: 45
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    #6

    May 23, 2010, 05:30 PM

    The fan motor is bad! About $75 for a new one
    kolsasha's Avatar
    kolsasha Posts: 6, Reputation: 1
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    #7

    May 23, 2010, 05:39 PM

    Good, for you, motor for my AC unit is around 130.00.
    Will order tomorrow.
    MOT08896
    7b0030B100A1
    Joshdta's Avatar
    Joshdta Posts: 2,549, Reputation: 45
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    #8

    May 23, 2010, 06:14 PM
    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?
    kolsasha's Avatar
    kolsasha Posts: 6, Reputation: 1
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    #9

    May 23, 2010, 06:25 PM

    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
    Joshdta's Avatar
    Joshdta Posts: 2,549, Reputation: 45
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    #10

    May 23, 2010, 06:28 PM

    What brand is it?
    kolsasha's Avatar
    kolsasha Posts: 6, Reputation: 1
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    #11

    May 23, 2010, 06:31 PM

    American Standard INC. Unit made in 2000
    Thank you
    Joshdta's Avatar
    Joshdta Posts: 2,549, Reputation: 45
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    #12

    May 23, 2010, 06:34 PM

    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
    kolsasha's Avatar
    kolsasha Posts: 6, Reputation: 1
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    #13

    May 23, 2010, 06:41 PM

    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
    bigdog50's Avatar
    bigdog50 Posts: 3, Reputation: 1
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    #14

    May 27, 2010, 06:53 PM

    Fan motor replaced... runs great
    Missouri Bound's Avatar
    Missouri Bound Posts: 1,532, Reputation: 94
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    #15

    May 27, 2010, 07:42 PM
    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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