You cannot use a dimmer switch on a fan motor but you can find fan speed controllers.
Running a ceiling fan on a dimmer switch.
The hunter all fan 3 speed fan light dual slide ceiling fan the hunter all fan 3 speed fan light dual slide ceiling fan control can be used with ceiling fans that operate with up to 300 watts of light and 1 6 amps for the fan.
Using a dimmer switch is not recommended for use with a ceiling fan.
Check the electrical switch your ceiling fan is connected to.
Although this will eliminate your ability to dim the light on the ceiling fan it will also reduce the risks of damage to the fan or your home.
The control provides 3 speed operation and a full range dimmer so you can select your desired level of cooling and lighting and is easy to install in a single box 3.
You need to make sure you have the right kind of dimmer switch and that your wiring is up to the coding requirements needed to safely carry something like this out.
Converting a three speed ceiling fan to variable.
Variable speed controls must be specially designed for use with ceiling fans.
Sometimes the electrical switch produces a humming sound when the fan is running.
How to install a ceiling fan light dual dimmer switch.
Replace a faulty electric switch or connect the ceiling fan so you can operate it by using the pull chains.
Never use a standard dimmer switch or unchecked wires to hook your ceiling fan up to a dimmer.
When using a remote control fan speed control or a dimmer switch the pull chain switches on the ceiling fan should be in the full on position otherwise the position of the pull chain switch will override these other control functions.
The best option you have for a ceiling fan that is wired to a standard dimmer switch is to change it out for a simple toggle switch.