I have a bedroom with a ceiling fan.
Right now, the wall switch only controls the light (on/off, no dimmer). The only way to change the speed of the fan is by the pull chain. So if you want to change the fan speed in the middle of the night, you either have to get lucky and find the chain in the dark, or turn on the light.
I bought a Legrand brand wall switch that has a 3-speed fan control built in. I wired it up according to the directions. But the switch still only controls the light and the 3-speed slider (very poorly) tries to act as a dimmer for the light.
How do I get the 3-speed switch to control the speed of the fan? I'm worried that there isn't the correct wiring going to the fan.