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HomeRepair HelpBryant Central A/C RepairBryant Central A/C Condensing unit does not run Repair
Bryant Central Air Conditioner Condensing unit does not run
When a Bryant central air conditioner condensing unit does not run, the outdoor AC unit may not be running because of a failed compressor, faulty wall thermostat, defective condenser fan motor, or failed fan motor. A compressor problem is highly likely when the AC condenser is not turning on, especially if the capacitor and condenser fan motor appear to operate normally. A thermostat with failed contacts can prevent both the furnace and outdoor condensing unit from starting. Testable issues include motor continuity, power reaching the motor, and fan blades that do not rotate freely because of seized bearings. If the unit has power but the contactor, fan, and compressor are inactive, low refrigerant may have tripped the low pressure switch, indicating a sealed-system problem. A Bryant pressure switch can also stop the condensing unit, but replacing it requires refrigerant recovery. Turn off power before inspecting parts, and remember that the condensing unit contains hazardous 240V wiring. Refrigerant diagnosis, sealed-system repairs, pressure-switch replacement, and compressor replacement require EPA 608 certification and a licensed HVAC technician. Enter your model number to find the exact Bryant replacement compressor, condenser fan motor, thermostat, or pressure switch for your central air conditioner.
01 - Bryant 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 - Bryant 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 - Bryant 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 - Bryant 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 - Bryant 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 Bryant central AC condensing unit not running?
What should I check if the condenser fan is not spinning?
Can a bad thermostat or capacitor keep the AC condenser from turning on?
What if the AC has power but the fan and compressor still will not run?
How do I identify the correct Bryant AC replacement part?
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