Follow the manufacturer s instructions to hook up your dimmer fan switch at the switch box.
Can you wire a ceiling fan to a dimmer switch.
If you replace with a plain switch switch the black wire up to the fan and cap off the red wire on both ends.
With a situation such as this it would be best to have a separate 3 wire cable from each ceiling fan to the switch box just in case the desired method of control will be changed.
A broken ceiling fan motor and a house fire are obviously not ideal outcomes however there is some good news.
Connect the blue wire to the red wire.
The new switch does require an additional electrical wire.
By all means you can connect a ceiling fan directly to a dimmer switch but you may run into problems along the way.
Connect black fan wire to the black ceiling wire.
If you replace with a blank plate wire nut the black from supply to this black and again cap the red.
To do this method the wire from your wall circuit to your light has to have 3 wires.
If it s more than just a dimmer you might keep it in a box for if you can use it later.
You can install a ceiling fan light dual dimmer switch to operate the fan speed and light intensity from the original wall switch location.
These typically require you to leave the white neutral wires in the switch box undisturbed and connect.
An example of this is that the motor in your fan could be damaged and rendered useless.