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HomeRepair HelpMaytag Central A/C RepairMaytag Central air conditioner compressor won't run Repair
Maytag Central air conditioner compressor won't run
If your Maytag central air conditioner compressor won't run, the compressor itself may be defective, but that is not usually the first part to replace. An AC compressor not running or an air conditioner compressor that won't start is more often caused by a failed start capacitor, which helps the compressor begin its cycle. Next, check the contactor, because it closes the high-voltage circuit that powers the condensing unit when it receives a signal from the control board. A failed run capacitor, capacitor, or dual run capacitor can also prevent the compressor from starting, although these causes are less common. Bulging or leaking capacitors indicate failure, while compressor continuity testing can help identify an open compressor circuit. Turn off power at the disconnect box and circuit breaker before inspecting any component. Testing or replacing the compressor, contactor, and capacitors involves dangerous 240V line voltage and may be beyond DIY scope. Any refrigerant or sealed-system repair requires an EPA 608-certified, licensed HVAC technician. Enter your Maytag central air conditioner model number to find the exact replacement part for your specific unit.
01 - Maytag 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 - Maytag 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 - Maytag 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 - Maytag 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 - Maytag 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 - Maytag 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 Maytag AC compressor not running?
Can a bad capacitor cause an AC compressor to stop running?
How do I know if the AC contactor is stopping the compressor from running?
How can I test whether the Maytag AC compressor is defective?
How do I find the correct replacement part for my Maytag central air conditioner?
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