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AC Fan Motor Not Working? It's Time For A Fix

The fan motor helps your air conditioning system maintain the right internal pressure and temperature. It's a very important part; when it breaks, your air conditioner will stop running.

Check Your AC Fan Motor

Both the indoor and outdoor units of your AC (air conditioner) unit have fan motors that move air through your system to keep the refrigerant at the proper temperature and pressure. If your AC fan motor isn't working, the unit won't run.

AC fan motor failures in the indoor unit aren't ideal, but if the motor in your compressor fails, you're in hot water — that’s the equivalent to blowing the engine in your car. You'll need your AC fan motor replaced for your unit to run again.

How to check if your AC fan motor isn't working

  • Make sure the thermostat is on cool mode. Set the temperature 5℉ lower than the actual indoor temperature.

  • Check the circuit breakers and the outdoor disconnect to make sure there's power going to the system. The outdoor disconnect is typically mounted on the wall at the outdoor unit. It allows the technician to disconnect power to the unit for servicing. If there's an external on/off handle make sure it is in the "On" position. If it's not, you're dealing with a tripped breaker.

  • Listen to the condenser while the system is on and see if you can hear a faint "hum". A humming sound means that the control circuit is telling the condenser to run. If it's humming but isn't working, and you've already checked your circuit breakers, then an electrical component is to blame.

    When an electrical component (such as a contactor or capacitor) fails, you'll need a multimeter to investigate furtner. Parts within the equipment are best left to a trained technician to diagnose and repair unless you're familiar with working on electronics. If you have a multimeter and feel comfortable moving forward, remote Assist can guide you through the next steps on video chat.

  • See if the condensate pump is plugged in to a working outlet. The condensate pump is a small box next to the furance that has a power plug and a clear tube coming out of it. Follow the plug and make sure it's plugged in. Double check the outlet to make sure it's working as well. If the GFCI has tripped, reset it.

  • Listen to your AC system by unplugging it for 15 seconds then plugging it back in. Then, hold down the reset button for three seconds, then release. Once it's restarted, listen to the sound.

    As it runs, a noise may develop. Is it high pitched? This sound indicates that your AC isn't getting enough airflow through the return vents and ductwork. The issue may be a loose fan bolt on the condensing unit.

If your AC fan motor is the problem, keep reading. If not, you can investigate other AC issues.

What To Do If Your AC Fan Motor Isn't Working

When the AC fan motor breaks, your air conditioning system is unable to run. You’ll want to contact a professional to come and help with the repair or replacement.

Want to fix your AC fan motor?

NOTE: This content is for informational purposes only, and HomeX and its affiliates disclaim all liability related to it. If you decide to perform any tasks based on this information, you assume all risks, including the risk of loss or damage to property or personal injury.

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