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Old 05-03-2009, 03:51 PM
Matt L Matt L is offline
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Join Date: Oct 2005
Posts: 4,263
Try playing with the vent position control to see if you can find a correlation. There's also the flap test program that you can run. I can find the instructions for that if need be; they're in the FSM.

It's not a hiss, right? A hiss could be due to low refrigerant or a restriction.
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