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I have a Goodman 3.5 ton, CKL42-1 outside unit. It was not cooling properly so I cleaned the fins because the were quite dirty. When I turn the system on it will run fine for about 20 minutes and then the fan will stop running but the consenser continues to run and it makes a horrible loud sound. Any ideas?

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  • fivemitch Jul 28, 2009

    Thanks for the response:

    I used condenser coil cleaner. Mixed 2 parts water to one part cleaner and sprayed on with a regular hand pump squirt bottle (like a bottle of windex). Then washed it off with a garden hose.

    When first turned on the unit will cool normally for about 10-15 minutes. When the temperature coming out of the vent inside the house get's to 69 or 70 the fan cut's off but the compressor keeps running and starts to make the loud horrible noise. When I turn the unit off at this point it makes an incredible hissing noise.

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How did you clean the fins if you powerwashed the chances are you bent all the fins over so the fan cannot pull in air and is shutting of on overload when it cools down it will come back on then heat up and shutoff again

Posted on Jul 27, 2009

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Solved problem myself. After reading quite a few good posts on other sites I narrowed it down to three possible issues; a bad fan motor, a bad start capacitor or a bad fan & capacitor combined. I purchased a new motor and a new capicator just to keep me from making two trips. I installed the new capacitor and the unit is working just fine and the motor can be returned because it's never been out of the box.

On second reading - the comment about washing the fins with a powerwasher was a rather novice attempt at problem solving.

Posted on Jul 29, 2009

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