There could be a problem with dirty or poor connections but most times, it is a small capacitor in the unit. It will be a small, usually black, usually rectangular device just about 2 times larger than a zippo lighter inside the housing somewhere. Home Depot, Lowe's, any hardware store carries them. If you do it yourself, make note on paper where the wires are connected, take the unit with you to make sure you get the correct replacement. Most are the same so you shouldn't have an issue there anyhow.

@maryland_irisman - Thanks for the suggestion. I am hoping there is a trick to flipping the control switches without having to pull the control panel. Casablanca has a replacement panel with "reverse" and instructions on how to wire it. We're trying to avoid it and jimmie the switches the way the electrician did.