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When compressor starts for my windw AC some crackling sound comes from inside,fan also is not very effective.

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Hi, it is possible that you have a problem with the combination blower motor/condenser fan motor. You have a dual shaft motor. Do you smell any type of burned electrical? If the motor is not up to speed, and you hear this noise, it sounds to me like the windings in this motor are getting hot, and you are about to loose this motor.Depending on the age of the unit, it may be cheaper to replace it. You can call out a tech, but this will cost you $$$$. If you let it run, it will finally go out on you. You can un plug it, go out side and take something long and thin to see if you can reach the motor and fan to see if it turns freely. If it is tight and hard to turn, you are loosing the motor, bearings and windings are starting to short out. This is your call, you can spend the $$$$ to have them tell you the same thing, or replace the unit with a good new one which would be the cheaper way to go. Good Luck,
Shastalaker7
A/C, & Heating Contractor

Posted on Apr 10, 2011

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