Ceiling Fan Motor Hums
Many people install a dimmer switch to operate the fan with a variable speed.
Ceiling fan motor hums. Common reasons why a ceiling fan might hum used up lubricant. Many modern fans have parts that mute the hum but sometimes these parts fail. New machine lube might be all you need to stop the incessant hum. Just be sure to avoid damaging the motor with chemical lubricant like wd 40.
One of the common reasons a ceiling fan makes an electrical humming noise is that the voltage the motor is receiving is too low. The solution is to keep. Different noises can be like some clue to what the problem is. Your ceiling fan may create grinding noise rattling sound rubbing noise buzzing noise clicking noise squeaking noise or humming noise.
Replacing the switch with a compatible one usually solves the problem. If someone installs a variable control ahead of the fan and the fan switch is on maximum speed reducing the speed via the variable control will cause the fan to hum. A hum in a ceiling fan is usually caused by the vibration of the motor and the volume of the noise depends on the mount housing and blades.