Question about Heating & Cooling
Hi, you can get a proper reading with a ohm meter when checking a run cap. All it will tell you is that the capacitor is not open internally inside if you have the ohm setting that sounds off. Its not ground or shorted to ground, but look on your meter to see if you have the symbol for capacitance, like uf's. It will look like this -). On this compressor the capacitor will be stamped with a number like 35, 40, 45, x 370 volts, or 440 volts uf. This is the microfarads. If the capacitor is not leaking oil, or is not swollen or deformed in any way, its probably good. You can have it checked at any a/c shop for nothing to see if its putting out the right amount of microfareds, the 35, or what the compressor calls for. If its good, your compressor from what you said was like a washing machine has probably locked its rotor up, and will need to be replaced. Its really to bad that you spent the $$$$ to replace the condenser fan motor and run cap, but this happens. Depending on the age of this unit, it may be cheaper or you may be better off installing a new 2 ton unit. 24,000 is 2 tons of cooling, as 12,000 btu's equal 1 ton of cooling. A 21/2 ton would be a 030 in the model number. Yours will have a 024. You can pull out the new motor and save or sell it. This would be your call. I can tell you how to check to see if the compressor is shorted to ground. Remove and mark the wiring at the compressor terminals. Set your meter to where it will beep. Now, touch each terminal with the red lead and the other to a clean piece of copper tubing on the unit. Do each one. If any one of them beep, that winding is shorted to ground and the compressor is dead. If not, and the run cap is good, the compressor is locked up internally. I see this everyday. I wish you the best of luck, and I know its frustrating as hell, but it happens. Please don't forget to rate me on this as I know you will be kind. I have all of your information I keep on file, and will be checking in to see how it is going for you. The compressor was trying to start when you saw it acting like a washer, but has locked up and either shorted to ground. Please keep me posted also.
Posted on Sep 03, 2010
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Posted on Jan 02, 2017
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