Adam,
I don't know if your Fantasticfan works like mine or not, but the cabinet switches only work the fans when the switches on the fan itself have the fan off. If the fan is not operating and we want it to operate, we turn the cabinet switch on and the fan works. On the fan, we either want ours on or off, so I set the temperature controller to the area where it will operate full time. If we want it on, we go to the coldest setting. If off, we go to the hottest setting. We always leave the fan speed on, either 1, 2, or 3. As any water falling on the fan sensor will close the fan, we leave it on whenever we leave the coach. Must mention we have a cat so when not using AC we don't want the interior to get too hot for the animal.
Roy