Lennox · Air Conditioning
The outdoor unit's DC fan motor is not operating correctly, or its speed is not being properly controlled. This can affect heat exchange.
Click steps to track your progress.
Ensure the outdoor fan blades are unobstructed and can spin freely.
Listen for the fan motor to run when the unit is powered on.
Check electrical connections to the fan motor.
If the motor or its control system is faulty, professional service is required.