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HomeRepair HelpArcoaire Central A/C RepairArcoaire Central air conditioner compressor won't run Repair
Arcoaire Central air conditioner compressor won't run
When your Arcoaire central air conditioner compressor won't run, the system may have an **AC compressor not running** problem caused by the compressor itself, a start capacitor, contactor, run capacitor, capacitor, or dual run capacitor. The compressor is the first component listed, but it is not usually the most common failure, so check the other components before replacing it. A failed start capacitor can keep the compressor from starting, while a defective contactor can prevent voltage from reaching the condensing unit. A worn run capacitor or dual run capacitor can also cause an **air conditioner compressor won't start** symptom. Look for a capacitor that is bulging or leaking, and use a multimeter only if you understand capacitor discharge and electrical safety. Turn off power at the disconnect box and circuit breaker before inspecting parts. Contactors, capacitors, and compressor circuits involve dangerous 240V line voltage, so have a qualified technician handle testing or replacement if you are not trained. Compressor replacement or any sealed-system repair requires an EPA 608-certified HVAC technician because it may involve refrigerant handling. Enter your Arcoaire model number to find the exact replacement part for your central air conditioner.
01 - Arcoaire 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 - Arcoaire 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 - Arcoaire 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 - Arcoaire 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 - Arcoaire 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 - Arcoaire 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 Arcoaire central AC compressor not running?
Why is my Arcoaire AC condenser not turning on?
How do I test an Arcoaire AC capacitor when the compressor won't start?
How do I know if the Arcoaire compressor is defective?
How can I find the correct Arcoaire AC replacement part?
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