How level does a trailer have to be to have the refrigerator work?  Is there anyway to tell or just wait 2 days till everythink gets warm?

What does your frig run on.  Mine runs on gas or electric and doesn't matter what the level of the trailer is it has always worked. 

Our trailers are rarely level when the fridges are fired up, and they've always worked. I'm talking reasonably level, comfortably enough to use without rolling out of bed and such.

gard

If you have the book or contact the manufacturer, they have a recommendation on how level it needs to be. It does not have to be perfectly level to run properly and mine has never had an issue. I can't remember the exact specs on mine but I know I read it at one point...3 degrees comes to mind but I won't swear to anything....my memory ain't what it used to be.