Well, we found out what the fridge problem was and it was an easy fix. The battery was not charged enough. We hooked it up to the truck, turned the fridge on and it came on right away. Thanks to everyone for your help!
One other question just for future reference. Is the battery needed just to light the fridge the first time when using propane or if the fridge is running on propane, does the battery have to be fully charged to keep it running?
2011 MicroLite 23LB
2012 Ram 1500 Crew Cab