When Should You Replace an Air Conditioner Compressor Contactor?
An air conditioner compressor contactor switches electrical power to the compressor during the cooling cycle. Like other electrical components, it can wear out or develop problems that affect AC operation. Knowing the signs of a failing contactor helps determine whether it is time to replace the part or investigate another cause of the problem. In this blog, we’ll look at what an air conditioner compressor contactor does, when it should be replaced, and what to check before replacing it. What Does an Air Conditioner Compressor Contactor Do? A compressor contactor is an electrically operated switch located in the outdoor condensing unit of an air conditioner. It uses a low-voltage control signal from the thermostat and control circuit to switch the higher-voltage power needed by the compressor. When cooling is required, the contactor closes its contacts to supply power to the compressor and condenser fan motor. When the cooling cycle ends, the contactor opens the circuit and disconnect...