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Old 09-12-2009, 07:35 AM   #1
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Trane XL 1000 Compressor fan motor


My compressor fan motor was turning on and off real quickly ( 3-5 seconds) but when the AC guy came out it was working correctly, pulling correct amps, etc. This morning though unit was not cooling and when I went out to the compressor to watch it start, as it kicked on I heard a loud buzzing and the fan blades were trying to turn but not much was happening. Does this sound like a new motor is needed? Also what should I expect to pay. The Trane unit is a TWR042C100B3

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Old 09-12-2009, 09:03 AM   #2
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Trane XL 1000 Compressor fan motor


There is a magnetic contactor which may have burnt and pitted contacts and need replacing. They sometimes stick. Not sure what it may cost. We don't quote prices due to the vast difference in cost of living between different areas.

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Old 09-12-2009, 09:51 AM   #3
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Trane XL 1000 Compressor fan motor


Contactors are like new. Replaced 3 years ago. Fan does not spin freely when I try and turn it. Additionally Capacitor is not swelled up or leaking.
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Old 09-12-2009, 10:22 AM   #4
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Trane XL 1000 Compressor fan motor


Then you need a new fan motor, yours is seizing up. Usually they don't buzz loudly when seizing, just get hot and cut out on a thermal overload. Call a couple of Trane dealers and ask for an approximate price or get the original guy back. He should not necessarily charge you for a new service call if it was within 2 weeks.
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Old 09-12-2009, 05:26 PM   #5
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Trane XL 1000 Compressor fan motor


Thanks.. I appreciate your comments as it just helps to confirm that the motor need replacement.
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Old 09-12-2009, 05:53 PM   #6
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Trane XL 1000 Compressor fan motor


I have had contactors buzz really loud and not cause any problems..this just may be a cotactor mounting issue. Not to say that the contactor isn't bad.

You might want to check out the capacitor(s) as well

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