My '02 Patriot had the same problem. The hose was pinched by the factory with a very small hole to drain the water. I cut the pinched end off, cleaned the trash out and per Norcold, put a small piece of sponge (from a sponge type paint brush) up the end of the hose. Just cut the very end of the hose or it will be too short to put in the pan.
I have seen the hose with a black plastic plug, that also has a small hole in it, from the factory. In this case, just take the plastic plug out, clean and remove the trash from inside the hose. Replace the plug, and check to make sure it drains properly.
Good luck,
Karl