AC and humidity problems.

I have the Coleman Mach 8 in my wolf creek. This weekend is the first I have played with the AC.

The AC definitely works for the small space, I can cool temps from 100 down to the lower 70's in an hour or so.
Humidity drops right along with temps.

This Coleman has the controls on the unit.
Once the compressor shuts off the fan continues to run inside, the humidity will rise fast. I mean from 50% to 90% in 10 minutes.
As soon as the compressor comes back on the humidity lowers again.
High or low fan has the same problem.

I feel that as the fan blows over the coil it must be evaporating any moisture remaining on the cooling coil which raises the humidify inside the camper.

Everything is new, purchased this spring. I pulled AC cover and coil cover, yes the water is running out through the foam that they put in the tray. (and it has the REV B fan for those of you following the cracked fan thread)

Is this just how these units with the overhead controls work?

I am ready to install a 20amp relay that is controlled by a low voltage circuit and a wall thermostat that will turn Electric off to the AC instead of leaving the fan running when not calling for heat.
NOTE: Thermostat will have 5 min delay so it can't turn AC back on until delay expires. than you control the fan speed on the overhead unit.

I did this to my last truck camper but it was because the temp swing using the AC overhead controls was driving me crazy.