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HomeRepair HelpDanby A/C RepairDanby Air conditioner compressor won't run Repair
Danby Air conditioner compressor won't run
If your Danby air conditioner compressor won't run, the fan may still blow while the unit never actually cools the room. The most likely cause is a faulty temperature control thermostat with worn electrical contacts that can power the fan motor but not the compressor motor. Next, the temperature control board may not be sending voltage to the compressor, though it should be checked only after more common failures like the compressor overload, capacitor, and compressor are ruled out. A defective thermostat can also keep the compressor from starting because it is not closing the circuit when the room temperature rises. The overload protector is another common failure point, and you can test it for continuity with a multimeter. A bad compressor is possible, but less common and should be replaced by a licensed technician. A failed thermistor can also cause an AC compressor not turning on by giving the control board bad temperature information. Enter your Danby model number on RepairClinic.com to find the exact replacement part for your specific air conditioner.
01 - Danby 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 - Danby 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 - Danby 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 - Danby 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 - Danby 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 - Danby 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 is my Danby air conditioner compressor won't run but the fan still works?
What should I test first when my Danby AC compressor is not turning on?
Can a bad thermistor keep a Danby air conditioner compressor from starting?
Should I replace the control board if my Danby air conditioner is not cooling?
How do I find the right Danby air conditioner thermostat, overload, or thermistor?
Is a Danby air conditioner compressor replacement a DIY repair?
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