Trane Heat Pump Fan

Old 07-27-08, 08:19 AM
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Trane Heat Pump Fan

The outside unit sometimes makes a really loud noise when the system is turned on. It doesn't always make the noise, but when it does, it is really loud. Originally I thought it was the motor making the noise, so I replaced it, but it is still making the noise. It appears the noise is coming from somewhere around the motor and/or fan area. Does anyone know if it is possible for the fan or top cover to make a vibration noise.

Thanks in advance for any help and/or advice.
Old 07-27-08, 01:40 PM
Join Date: Feb 2008
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It might that the fan hub is loose (I'm not talking about the set screw). That can sure make a racket! Hold the shaft and see if you can rotate the fan by hand.

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