Atwood A/C Drips water from the filter

[Loretta]

We've started to full time in our 2010 Greyhawk. The A/C started dripping water from the filter frame (handle). I pulled the filter out and I cant find anything in the unit that is wet. The filter was dirty I cleaned it out and no dripping for 3-4 days and then it started again. I cleaned the filter (not as dirty) and put it back in. Any thoughts?

Today, in a rain, it started to drip again but this time the filter is clean. Again I cant find any water or wet in the unit and when I pull the filter out the dripping stops. Any thoughts?

I'm not sure how the filter can cause this but it seems to be the common denominator.

Thanks in advance.