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Amana Prestige Ultra A/C compressor won't cycle on

\015 The thermostat makes the fan kick on and when the compressor tries to cycle on I hear a buzz like it's trying to come one but then it stops without coming on. The lights dim slightly in the house indicating the draw of power as it is trying to cycle on, then return to normal when the compressor fails to start.\015

Answers :

When the compressor tries to come on is the fan motor running? If it is, then the compressor could possibly be bad or it can be just the capacitor that is bad. The compressor won't start if the capacitor is bad or doesn't have enough energy to help start the motor and it will also cause the lights to dim. If the comprssor was bad, in all likely hood the breaker would trip. You can do an ohms test on the compressor to determine that. If you have a meter that tests microferods, then you can test the capacitor as well. But if the fan motor doesn't come on as the compressor is trying to start, then check the contactor to see if it is not making good contact. I would check it just for arguments sake anyway. Also make sure that you are getting 220v to the unit as well. Good luck, hope this helps. Oh, you can also look at the capcitor and sometimes, they will puff up and look swollen when they go bad as well but not all the time.
Sounds like a bad compressor or the brushes in the motor need to be changed

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