Help Wiring Ceiling Fan With Dimmer Switch
I don't think you will be able to use a remote control unit in conjunction with a conventional wall switch type dimmer. They are just not going to be compatible.  Use a standard switch on the wall or simple wire the hot together all the time. Then use the remote control for any and all control.  You don't really need the red wire.  Just cap it off. Then just send full time power to the ceiling box on the black.