Fan made a buzzing sound when running
The quiet fan key is to isolate the vibration of the motor from all other parts. This happens, in most fans, in three places: between the blade brackets, between the blade brackets and the blades, and between the flasher and the mounting bracket. Some fans also have a vibration isolation material between the mounting bracket and the ceiling. If your fan makes a distinctive buzzing sound, check for the type of vibration isolation material above. With the exception of rubber flywheel, if your fan is less than the above, they are easily added and have to resolve most of the buzzing issues. You can always add additional materials such as rubber washers and spacers.
Fan made an electric buzzing noise while running.
By far the most common cause of electrical noise from a fan is the use of improper speed control. Most fans made today are not designed to be used with Solid State speed control. Use a speed control, such as a capacitor type, which is recommended for your fan. DO NOT use the dimmer switch ever in the fan motor.
Fan moves with very little air.
First, check and see if any of the problems listed above apply. Run too slow? Not balanced? Check and make sure the fan is not operating in reverse (for most fans, clockwise, see ‘reversing part’). Another less likely option is that the propeller is bent or curved without actually making the fan unbalanced. Observe the fan from the side to see if the propeller is still relieved. If not, refer the balancing part to bend back to where it belonged.
Check to make sure that all controls on the fan are functioning and properly adjusted. Does the fan have light? Does the lamp work? If the fan and the light are not working, it is possible that the connection and / or fan problems are not getting power. If the lamp is working and the fan is not on, the first thing to check is whether the black cable has been disconnected inside the canopy. Next, check to make sure the blades are turned free. Otherwise, the problem may involve cushioned pads, broken flywheels, or just something stuck in a motorway or a blade that is not there.
The fan light does not work
If the fan works but is not bright, the problem is usually a loose connection between the power source and the light kit.
Fan walks, but wobbles or shakes
See the section on balancing.
Fan walked, but slowly.
First, check to see that the fan blades are spinning freely through the hands and shore after spinning. If the rotation in any way is rigid, this is a marker of dirty, dry, or folded pads, which can slow down the motor. The fan should be oiled. Second, does the fan vibrate at all? If for any reason, the pitch blade is steeper on one or more slats than the designed motor, this will slow down the motor. See the balancing part. If the blades turn free and balanced, the cause of the fan running slowly almost always becomes a bad capacitor. This should be replaced with capacitors of the same value.