What auses the A/C make a loud humming sound only on high speed

Tiny
BILLMILL5050
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Friday, July 13th, 2012 AT 10:30 PM
Tiny
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Where did you get your diagrams at?

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Friday, July 13th, 2012 AT 10:33 PM
Tiny
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I ran ac it open & closes a door when u go from ac to max ac

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Saturday, July 14th, 2012 AT 12:13 AM
Tiny
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Thats your recirculation door actuator.

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Saturday, July 14th, 2012 AT 12:25 AM

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