Dimmer Switch Ceiling Fan Compatibility

The simple answer:

No. The wall dimmer switch reduces power flow and interferes with the fan control. Replace the wall dimmer switch with an on-off switch. You may need an electrician for this.

The More Complicated Answer (We ARE engineers after all):

Most electrical devices, including our controls, are designed to operate at full voltage (e.g. 120V). If you were to provide a modified sine wave to a device that is designed for straight 120V, it could behave abnormally or just stop working. You can think of it like an electrical grid black out that happens 120 times a second.

Because of this, you'll need to replace your wall dimmer switch with an on-off switch.  You may need an electrician for this.

In the image below, the topportion represents a typical 120V sine wave, while the bottom two portions are modified waves produced by a dimmer. The modified waves are “cut off” halfway through each cycle, so it should only deliver 50% of the power that the full sine wave.