? Compressor is driven by the motor is running its compression pistons, high temperature and pressure to the exhaust pipe from the refrigerant gas to provide power for the refrigeration cycle. Let's us see compressor of the detection table.
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? Compressor if replace the unit top and screws, making sure all wiring is proper and correct beforehand. Return power to the unit and check the pressure with your guages. If the compressor is running properly, the suction (bigger) line should begin to get cold and "sweat" with condensation.