Why Is My Outdoor A/C Unit's Fan Not Spinning?

Why is My Outdoor AC Unit's Fan Not Spinning?

There is nothing more frustrating than when your air conditioner has stopped blowing cool air during the middle of the summer. Now what? After performing a surface inspection of the AC unit to discover the source of the problem you notice that the fan is not spinning. If this is the case, it's important to determine the cause right away. Whether the fan will not start or runs sporadically, there are a variety of reasons behind the problem. In this blog post, the technicians at A-TEMP Heating, Cooling & Electrical can help you troubleshoot the issue to help you determine if you need to call for professional AC repair.

Common Reasons Your AC Fan Is Not Spinning

Start Capacitor Breakdown

Capacitors are composed of electric devices used to run the electric motor in the condenser unit. As long as the capacitor is running, the motor also runs. But when it fails, the fan motor will spin slowly until it stops working. Similar to batteries, capacitors may also shut down because of high voltage or high temperature. With extreme outdoor temperature, the capacitor will stop doing its job. Try turning your condenser on and off to see if the fan works. If it stays at rest, then bring in professionals for expert help.

Defective Condenser Unit

Sometimes, the problem lies in the condenser unit itself. A faulty outdoor unit may cause the fan not to spin no matter how hard it tries. If the unit has trouble starting, the fan motor will not start either. As a result, your AC’s outdoor fan will no longer spin which restricts the air from circulating properly in the entire house. If you experience a problem such as this, do not hesitate to call A-TEMP for inspection and repair services.

Faulty Condenser Installation

There are cases that the fan motor does not spin because the outdoor unit is incorrectly installed. Faulty installation may affect the power that runs through the electrical wiring connecting every component of the condenser. When the unit is positioned at the wrong angle, the compressor will not do its job in delivering the right amount of power into the fan motor. In this situation, checking the circuit breaker will help you come up with the right and effective solution.

When to Call for AC Repair

Like the other AC components, your condenser fan is also susceptible to failure over time. In case of emergency inspection and repair, call us at A-TEMP Heating, Cooling & Electrical and we will help you identify the cause of the problem. Our experts can give you efficient and affordable solutions to your heating and cooling needs.


If your AC fan has stopped spinning and you would like to schedule a professional AC repair service in Portland, give A-TEMP a call at (503) 694-3396 or contact us online today!


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