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HomeRepair HelpBryant Central A/C RepairBryant Central air conditioner compressor won't run Repair
Bryant Central air conditioner compressor won't run
If your Bryant central air conditioner compressor won't run, the compressor itself may be defective, but it is usually best to check the more common electrical causes first. A failed start capacitor can keep the air conditioner compressor from starting, especially if it is bulging, leaking, or cannot hold and release a charge. A defective contactor can also prevent power from reaching the compressor when the furnace control board sends its low-voltage signal. Next, check the run capacitor, capacitor, or dual run capacitor, since any of these can fail and stop the compressor from operating. If those components test properly, the compressor may have an open circuit or internal failure. This problem can leave the central AC not cooling, with the indoor blower running while the outdoor unit remains quiet or the compressor hums without starting. Turn off power at the disconnect box and circuit breaker before inspecting parts. Capacitors and compressor circuits involve hazardous 240V electricity, so testing or replacement may require a qualified technician. Any repair inside the sealed refrigerant system requires an EPA 608-certified HVAC professional. Enter your Bryant model number to find the exact replacement part for your central air conditioner.
01 - Bryant Central Air Conditioner Compressor
The compressor is a pump which compresses the refrigerant and circulates the refrigerant through the evaporator and condenser coils. If the compressor is defective or worn out, it likely won't run. However, this isn’t usually the case. Before replacing the compressor, first check all of the more commonly defective components. If all of the other components are working properly, use a multimeter to test the compressor for continuity. If there is an open circuit, the compressor is likely defective.
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Highly Likely
02 - Bryant Central Air Conditioner Start Capacitor
A start capacitor is often used to cycle on the compressor. If the capacitor burns out, the compressor may not run. The start capacitor can be tested with a multimeter to determine if the component can successfully hold and release its charge. If the capacitor is unable to hold and release a charge, or is bulging or leaking, the capacitor will need to be replaced.
Common
03 - Bryant Central Air Conditioner Contactor
The furnace control board sends a low voltage signal to the contactor. When the contactor receives the signal from the control board, it closes the circuit, sending voltage to the condensing unit components. If the contactor is defective, it can prevent the compressor from running. To determine if the contactor is at fault, use a multimeter to test the contactor coil for continuity. If the contactor coil does not have continuity or the contacts a on the coil look burnt, replace it.
Common
04 - Bryant Central Air Conditioner Run Capacitor
A run capacitor will power either the compressor or the fan motor (a dual run capacitor will power both). If the capacitor burns out, the compressor may not run. To determine if the run capacitor has failed, test the capacitor with a multimeter. If the capacitor is unable to hold and release a charge or is bulging or leaking, replace it.
Less Common
05 - Bryant Central Air Conditioner Capacitor
The capacitor provides voltage to the compressor to start it. If the capacitor is defective, the compressor won't run. To determine if the capacitor has failed, test the capacitor with a multimeter. If the capacitor is unable to hold and release a charge or is bulging or leaking, replace it.
Less Common
06 - Bryant Central Air Conditioner Dual Run Capacitor
A dual run capacitor will power both the compressor and the fan motor. If the capacitor burns out, the compressor may not run. To determine if the dual run capacitor has failed, test the capacitor with a multimeter. If the capacitor is unable to hold and release a charge or is bulging or leaking, replace it.
Less Common
Frequently Asked Questions
Why is my Bryant central AC compressor not running?
Can a bad capacitor cause an AC compressor not to start?
What should I check if my Bryant AC condenser is not turning on?
How do I know whether my AC compressor is bad or the capacitor is bad?
How do I find the correct Bryant AC compressor or capacitor replacement part?
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