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Thread: ZIEHL ABEGG condenser motor troubleshooting procedure

  1. #1
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    ZIEHL ABEGG condenser motor troubleshooting procedure

    Motor trips 4 amp breaker when 460V power is applied.

    Model FN063-ZIQ.GL.V7P3/154972






  2. #2
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    That looks like a single unit, control and motor ?...the old ones were separate, test the motor leads ohms should be equal.
    "He who knows the least, knows it the loudest"
    I'm not young enough, to know everything...

  3. #3
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    Toasted it, was that a Hoffman or Rittal ?
    There is not better place for the working men than the union! 100% UA the only HVAC union!

  4. #4
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    Quote Originally Posted by valdelocc View Post
    Toasted it, was that a Hoffman or Rittal ?
    Neither, but both condenser motors were bad.

  5. #5
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    As mentioned above, check the motor leads for equal resistance. I would also Meg them to ground as well.
    If the windings check out okay, disconnect the leads to the motor and re-apply voltage. If the breaker still trips, the issue lies within the module or the supply circuit.

    Curious, what is the make/model of the unit? I have only came across these on high end euro style units (GEA). Generally very reliable, but also dead expensive.
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  6. #6
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    I cant remember for sure but I thought Seresco had some trouble shooting procedure for those. Possibly.

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  7. #7
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    They look like condenser fan motors I have had to change on MRI chillers mounted in a semi-trailer. I think it was a Northern Air set up. They sent out the whole assembly, that thing weighed at ton to pull up on top of the trailer.


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  8. #8
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    95lbs

  9. #9
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    can you even buy separate parts (motor/module) for those?

    I always figured it would be all or nothing.

  10. #10
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    Quote Originally Posted by 71CHOPS View Post
    can you even buy separate parts (motor/module) for those?

    I always figured it would be all or nothing.
    I changed a few and had to buy the whole thing including the blades, once waited for 2 months to get a replacement, ran the chiller with a large fan from HFT strapped to the condenser.
    There is not better place for the working men than the union! 100% UA the only HVAC union!

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