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White-Westinghouse Air conditioner compressor won't run

If your White-Westinghouse air conditioner compressor won’t run, the unit may still power the fan while the sealed system never starts cooling. The most likely cause is a failed temperature control thermostat, since its internal contacts can burn out and stop sending power to the compressor. Next, check the temperature control board, which supplies voltage to both the fan motor and compressor, but confirm the compressor overload, capacitor, and compressor are good before replacing the board. A faulty thermostat can also keep the compressor from starting when room temperature rises. If the AC compressor is not turning on, test the overload for continuity because a burned-out overload can interrupt power to protect the compressor. The compressor itself can fail, but that is less common and should be handled by a licensed technician. A bad thermistor can also cause a White-Westinghouse air conditioner compressor not working condition. Enter your model number on RepairClinic.com to find the exact replacement thermostat, control board, overload, thermistor, or other part for your specific air conditioner.

01 - White-Westinghouse Air Conditioner Temperature Control Thermostat

The temperature control thermostat has electrical contacts inside that burn out over time. It is possible for the thermostat to still turn on the fan motor but not the compressor motor.
Highly Likely

02 - White-Westinghouse Air Conditioner Temperature Control Board

The temperature control board provides voltage to the fan motor and compressor. If the control board is defective, it may stop providing voltage to the compressor. Control boards are often misdiagnosed. Before replacing the temperature control board, make sure you check more commonly defective parts—particularly the compressor overload, capacitor and the compressor itself. If you are certain that all of the other components are working properly, replace the temperature control board.
Highly Likely

03 - White-Westinghouse Air Conditioner Thermostat

The thermostat monitors the temperature of the air. When the air temperature rises above a set point, the thermostat activates a switch to provide power to the fan and compressor. If the thermostat is defective, it may prevent the compressor from running. If you determine that the compressor is at fault, replace it.
Highly Likely

04 - White-Westinghouse Air Conditioner Overload

The overload protects the compressor from burning out if it draws too much current. Over time, the overload can burn out. To determine if the overload is burned out, use a multimeter to test the overload for continuity. If the overload does not have continuity, replace it.
Highly Likely

05 - White-Westinghouse Air Conditioner Compressor

The compressor itself might be defective. However, this is not usually the case. Before replacing the compressor, be sure to check more commonly defective components—particularly the overload protector and the compressor capacitor. If the compressor is defective, it should only be replaced by a licensed technician.
Highly Likely

06 - White-Westinghouse Air Conditioner Thermistor

The thermistor is a sensor connected to the control board that detects the temperature of the outside air. If the thermistor does not have continuity, it can prevent the compressor from running. To determine if the thermistor is at fault, use a multimeter to test it for continuity. If the thermistor does not have continuity, replace it.
Common

Frequently Asked Questions

Why won't my White-Westinghouse air conditioner compressor run if the fan still works?
What should I check first when my White-Westinghouse AC compressor is not turning on?
Can a bad thermostat cause my White-Westinghouse air conditioner to blow warm air?
Should I replace the control board if my White-Westinghouse air conditioner compressor won't start?
How do I find the right White-Westinghouse air conditioner replacement part?
When does an air conditioner compressor problem require a licensed technician?