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HomeRepair HelpHotpoint A/C RepairHotpoint Air conditioner compressor won't run Repair
Hotpoint Air conditioner compressor won't run
If your Hotpoint air conditioner compressor won’t run, the fan may still blow but the unit will not cool properly because the compressor is not starting. The most likely cause is a failed temperature control thermostat with burned electrical contacts, followed by a defective temperature control board that is no longer sending voltage to the compressor. A faulty thermostat can also keep the compressor from being energized, and a burned-out overload can open the circuit to protect the compressor from excessive current. The compressor itself can fail, but it is usually worth testing the overload protector and capacitor first, since those parts are more commonly at fault. A bad thermistor can also cause an AC compressor not turning on if it cannot report air temperature correctly to the control board. Use a multimeter where appropriate to check continuity and voltage before replacing parts. Once you identify the failed part, enter your Hotpoint air conditioner model number on RepairClinic.com to find the exact replacement temperature control thermostat, control board, overload, compressor, thermistor, or related part for your specific unit.
01 - Hotpoint 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.
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Highly Likely
02 - Hotpoint 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 - Hotpoint 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 - Hotpoint 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 - Hotpoint 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 - Hotpoint 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 Hotpoint air conditioner compressor run if the fan still works?
How do I test a Hotpoint air conditioner overload when the AC compressor is not turning on?
Can a bad thermostat cause a Hotpoint air conditioner compressor not to work?
Should I replace the control board if my Hotpoint AC compressor won't run?
How do I find the right replacement part for a Hotpoint air conditioner compressor starting problem?
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