Air Conditioning Issue Prevention: Check Up on the HVAC Condenser Fan Motor

Air Conditioning Issue Prevention: Check Up on the HVAC Condenser Fan Motor

Did you know that the condenser fan housed inside your outdoor unit directly impacts how well your air conditioner performs? If the motor that powers the fan blades isn’t working right, it may not send sufficient air across the condenser coil, which can cause a wide range of A/C problems.

Here’s a closer look at why you need to take good care of your HVAC condenser fan motor.

Overheating is a Fan Motor’s Kryptonite

A condenser fan will only work right up to a certain temperature – typically 150 degrees. When the fan gets too hot, the blades can stop turning, which leaves costly components like the compressor vulnerable to damage or failure from overheating.

There are some warning signs of problems with your condenser fan motor:

  • Air arriving at the registers feels warmer than normal
  • The outdoor unitcabinet feels hot (not just warm) to the touch
  • You hear a humming or buzzing noise coming from the unit
  • You notice the smell of singed electrical wiring at the unit

Possible Causes of Condenser Fan Motor Failure

There are a number of problems that can cause overheating and a failure of your fan motor:

  • Old or defective motor. Motors can give out because of age, or fail prematurely because they’re defective.
  • Bad capacitor. A faulty capacitor can cause a drop in fan speed, or a complete failure.
  • Electrical component problems. Circuit board or wiring problems can burn out the fan motor, or cause it to start and stop.
  • Inadequate airflow. If there’s not enough space to allow proper airflow in the outdoor cabinet, the fan motor can overheat and quit.
  • Lack of maintenance. A lack of regular cleaning or lubrication can cause the fan to run too hot and seize up.

Timely preventive maintenance can help prevent common motor problems. During maintenance, an HVAC pro inspects all the electrical components, and cleans and lubricates the fan motor so it keeps working properly.

To schedule A/C maintenance and HVAC condenser fan motor care in your Martin, Palm Beach or Indian River County home, contact us at NisAir Air Conditioning and Heating.

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