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HomeRepair HelpFrigidaire Central A/C RepairFrigidaire Central A/C Condensing unit does not run Repair
Frigidaire Central Air Conditioner Condensing unit does not run
If your Frigidaire central air conditioner condensing unit does not run, a bad run capacitor or a tripped circuit breaker or blown fuse is the most likely cause. A failed compressor is a possible but less common cause. A faulty wall thermostat can prevent the furnace and outdoor unit from starting, while a defective condenser fan motor can also keep the condensing unit from running. With power disconnected, you can inspect whether the condenser fan blade turns freely and use a multimeter to check motor continuity, but testing live 240V circuits, the contactor, capacitor, or other line-voltage components is beyond basic DIY work and should be handled by a qualified technician. If the outdoor unit has power but both the compressor and fan remain off, low refrigerant may have tripped the low pressure switch, indicating a sealed-system problem. A failed pressure switch is less common and requires refrigerant recovery before replacement. Any refrigerant diagnosis or repair requires EPA 608 certification and a licensed HVAC technician. Enter your Frigidaire central air conditioner model number to find the exact compressor, condenser fan motor, thermostat, pressure switch, or other replacement part for your specific unit.
01 - Frigidaire Central Air Conditioner Compressor
Central air conditioners use a compressor to pump refrigerant through the condenser coils located in the outside condensing unit and through the evaporator coils mounted on top of the furnace or air handler. While it's not a common problem, if the compressor fails, the condensing unit will not run. You can use a multimeter to test the compressor for electrical continuity, a continuous electrical path present in the component, to help determine if the compressor is faulty. If all other potentially defective components, such as the capacitor and condenser fan motor, are operating properly, then a qualified technician should ...
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Highly Likely
02 - Frigidaire Central Air Conditioner Wifi Thermostat
The WiFi thermostat has contacts in it that control the furnace. If the contact fails it can result in the furnace and the condensing unit to not run at all.
Common
03 - Frigidaire Central Air Conditioner Condenser Fan Motor
A faulty condenser fan motor can be responsible for the central air conditioner condensing unit not running. You can use a multimeter to test the fan motor for electrical continuity, a continuous electrical path present in the motor, to help determine if the motor is defective. You can also use the multimeter to determine if power is reaching the motor. You can also try rotating the fan blades by hand. If the blades do not turn freely, it's likely the motor bearings have seized and the fan motor will need to be replaced.
Common
04 - Frigidaire Central Air Conditioner Fan Motor
A faulty fan motor can be responsible for the central air conditioner condensing unit not running. You can use a multimeter to test the fan motor for electrical continuity, a continuous electrical path present in the motor, to help determine if the motor is defective. You can also use the multimeter to determine if power is reaching the motor. You can also try rotating the fan blades by hand. If the blades do not turn freely, it's likely the motor bearings have seized and the fan motor will need to be replaced.
Common
05 - Sealed system problem
If the condensing unit has power to it, the contactor checks out okay, but the fan and compressor are not running, it is likely that the unit is low on refrigerant which will cause the low limit pressure switch to trip and keep the unit from running. Since diagnosing and repairing a sealed system takes specialized tools and knowledge, a qualified service technician should diagnosis and repair the unit.
Common
06 - Frigidaire Central Air Conditioner Pressure Switch
A pressure switch is a safety device used to help prevent component and system failures. There are basically three types of pressure switches used in central air conditioning and heat pump applications: High Limit, Low Limit, and Ambient Temperature. Depending on the model, you may have one or more of these or none. The pressure switch(es) can be checked with a multimeter, referencing the wiring diagram for the circuit locations. Note: If a pressure switch needs to be replaced the refrigerant will need to be removed, requiring a qualified technician.
Less Common
Frequently Asked Questions
Why is my Frigidaire condensing unit not turning on?
How do I troubleshoot a Frigidaire condenser fan that is not running?
Can a thermostat cause the outside AC unit not to turn on?
What if the Frigidaire condenser has power but the fan and compressor will not start?
How do I find the correct Frigidaire central air conditioner part for my repair?
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