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Thread: ECM FAN MOTOR

  1. #1
    Join Date
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    ECM FAN MOTOR

    I need to test a G.E. ECM 2 speed condenser fan motor. It's out of a American Standard M# XL1800. What voltage goes to the blue and yellow leads ?
    TIA
    VTP

  2. #2
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    Feb 2009
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    Hopefully you can distiginguish the high voltage leads. The other leads are 24v

  3. #3
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    Quote Originally Posted by VTP99 View Post
    I need to test a G.E. ECM 2 speed condenser fan motor. It's out of a American Standard M# XL1800. What voltage goes to the blue and yellow leads ?
    Blue and Yellow - 24v

    Brown and Black - 220V

    Green - ground

    Send me and email with the model number and I will forward the service facts, and info on these ecm motors.
    Instead of learning the tricks of the trade, learn the trade.

  4. #4
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    Jan 2010
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    Thanks SKBold,
    Yes brown & black are my high voltage leads. 24v for yellow and blue makes sense too.

  5. #5
    Join Date
    Jan 2010
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    Thanks rundawg,
    My understanding is that these motors are 3 phase DC. The motor control converts the high voltage. Are the low voltage leads for the speeds with blue being ground. American Standard
    Model # TTZ036A100A2
    Serial # Z2926591F
    Thank again for any info.
    P.S.
    motor is a GE 5SME39HLHY02
    looks like a GE ECM 142
    Last edited by VTP99; 09-18-2012 at 08:11 PM.

  6. #6
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    Quote Originally Posted by VTP99 View Post
    Are the low voltage leads for the speeds with blue being ground.
    Blue is common.

    The low voltage leads send the signal to the motors module telling it what speed to operate at.
    Instead of learning the tricks of the trade, learn the trade.

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