The air conditioner fan motor drives the AC fan, which blows air in and out of the house. This is important for moving hot air to the outside of the building, as well as blowing cool air through the ductwork and into the rooms. The fan motor is a vital part that must be running well for the AC unit to do its job.
What is a fan motor?
Fan motors are very simple in construction. They consist of a synchronous or asynchronous electric motor, with a fan wheel of the associated shaft, and the connections for the lines. … All motors consist of a stator and contain a rotating rotor inside, which is surrounded by pole-pieces.
How do I know if my fan motor is bad?
7 Signs and Symptoms of a Bad AC Fan Motor
- AC Fan Doesn’t Start. Even though you have the AC turned on, the fan does not start.
- AC Fan Doesn’t Stop. …
- Slow Rotating Blades. …
- Outside Fan Blades Are Still. …
- Rattling, Humming and Buzzing Noises. …
- AC Runs Intermittently. …
- No Cold Airflow.
Does a fan work in a vacuum?
YES fan works in vacuum. It also increase the RPM of the fan bcz of the lack of air resistance just like fan RPM get slower when immersed in water which have a higher density than air .
What happens when a fan motor goes bad?
If there’s something wrong with the fan motor, it could cause the blades to start acting strangely. The blades might not start up when the air conditioner does, or they might not stop spinning once the air conditioner shuts off.
What causes fan motor failure?
The main causes of failure are loss of lubricant, a failed run capacitor, a failed bearing in a belt drive, a little water dripping into the windings or a voltage problem. So technicians should carefully check to find the cause of a failure before changing the motor.