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Rheem condensing unit fan motor failure?................3rd motor was replaced by contractor on 3 year old unit. Unit starts vibrating very badly and will also start vibrating when blocking airflow. All mounting screws are tight. Is there an issue going on with these GE motors? What is the issue here? Contractors have not seen this type of issue before. R-410A, Model: RANL-030-JAZ

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  • Brian Niten Sep 02, 2010

    Do you know if they replaced the motor with one that had the same horsepower rating & same RPM. I have heard that a motor with a higher horsepower rating will cause some vibration.

  • khigg002 Sep 03, 2010

    All 3 motors are GE, 1/6 horsepower and 1075RPM.

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Could be the fan blade is the issue for vibration. Perhaps the blade was bent or somewhat damaged during failures or during the fan motor replacement process.

Might try replacing the blade. Be sure to install the correct blade. Pitch, number of blades as was on the original unit. If blade was replaced previously, the new blade may be pitched or sized incorrectly.

Posted on Sep 04, 2010

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