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I have to assume that you are referring to the fan on the outside Condenser Unit? The most likely causes are either a burned out fan motor, or a blown Capacitor on the motor startup circuit.
number of things. you could have a bad condenser fan motor. bad contactor or a bad run cap for the condenser fan motor.
series
petrapkg unit condnserfan motor
To replace a condenser fan motor in an air conditioning unit, you need to turn off the power, remove the fan blade, disconnect the wiring, unbolt the motor, install the new motor, reconnect the wiring, replace the fan blade, and turn the power back on.
To change the condenser fan motor, first turn off the power to the unit. Remove the fan blade and motor from the unit. Disconnect the electrical wires and remove the old motor. Install the new motor, reconnect the wires, and reattach the fan blade. Finally, turn the power back on and test the unit to ensure it is working properly.
To replace a condenser fan motor, first turn off the power to the unit. Remove the fan blade and disconnect the electrical connections. Unscrew the motor from the unit and install the new motor in its place. Reconnect the electrical connections and reattach the fan blade. Finally, turn the power back on and test the unit to ensure it is working properly.
Common signs of a malfunctioning HVAC condenser fan motor include the unit not cooling properly, strange noises coming from the outdoor unit, the fan not spinning, or the unit shutting off unexpectedly.
Common signs of a malfunctioning air conditioner condenser fan motor include reduced cooling efficiency, strange noises coming from the unit, the fan not spinning properly or not spinning at all, and visible damage or wear on the motor itself.
To replace a Trane condenser fan motor, first turn off the power to the unit. Remove the fan blade and motor from the unit. Disconnect the electrical connections and remove the old motor. Install the new motor, reconnect the electrical connections, and reattach the fan blade. Turn the power back on and test the unit to ensure it is working properly.
There is an electrical drawing on the motor that tells you how to wire it.
The correct wiring diagram for a 3-wire condenser fan motor typically involves connecting the wires labeled as "common," "fan," and "herm" to their corresponding terminals on the motor and capacitor. It is important to follow the manufacturer's instructions and consult a professional if unsure.