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First off, you need to ensure the flame is burning. You can tell by several indicators. First, the indicator light on the fridge control panel would be on solid, not flashing. Second, you can stand out by the ventilation grille and hear the pilot burning...it's very quiet but you can hear it. Third, if you take the grille off, the vent chimney will be hot.
Is this your first encounter with a gas/electric fridge? They don't cool instantly like the one in your house. They take several hours of running before the refrigerator compartment feels cool. The freezer will get cold first then the trickle down effect follows to the refrigerator compartment.
Make sure your coach is level when running the fridge. It is especially important while running on propane to be level. Do a search and you'll find several recent threads on gas fridge operation. To check the gas flame appearance you need to remove a sheet metal shroud on the backside of the fridge behind the grille at the bottom of the chimney area. I'd try using a small inspection mirror first. You should see a nice blue pilot-sized flame not much bigger than a large candle flame.
Purge the air from your propane lines prior to attempting to light the fridge by lighting a burner on your cooktop and running the furnace for a minute or two. The gas bleeds out of the line when your coach is sitting unused for any length of time.
2006 23B Hybrid with 10k round bar WDH
2011 F150 4x4 SCREW Ecoboost, Max Tow, Integrated TBC, 3.73 LS axle, Firestone Ride Rite airbags.