There aren't any controls inside the fridge on the units that are installed in the A-frames. The ones with internal controls are installed in the big units, 5ers and TTs. Still, the little fridges we have are versatile, triple-powered units. Very handy for boondocking.
Of the two fridge vent grilles outside on the drivers side, the upper one gives you access to the two electrical switches, one for 12 volt operation, the other for 120 volt ("shore power" is the hip camper term) operation. Never have both switches on at the same time, and if you're using propane, don't have either switch on. There's a grey knob on the same little panel as the switches, and that's your temp control. Depending on ambient temp, you may find you prefer a setting in the 3 to 6 range to start with, and adjust from there. Most campers start their fridges on shore power the day/evening before their trip starts, then switch to 12 volt while traveling, then to either propane or shore power if available as soon as they get parked. That's 'cause 12 volt operation will draw down your battery quickly. Think of 12 volt operation of the fridge as like a "bridge mode", for bridging between Camp Driveway and Camp Outtahere.
The bottom of the two vent grilles gives access to the burner controls for using the fridge on propane mode. Have both of the previously-covered electrical switches off, then turn the grey gas control knob to ON, push it in and hold it, and push the spark igniter (red) button several times. Then release the gas control knob. IF you've remembered to turn the propane tank valves on, and IF the gas lines have had a few moments to fill, and IF you did the ignition routine right, the fridge pilot will light. You probably won't be able to see it in daylight, but leave the vent grille off a while and come back and carefully feel the area around the burner. If its cold, try starting the burner again. If its warm, you're done, except for setting the temp and putting the grille back on. We have ours set very low, like 1 and a half, because propane mode works VERY well. That's the source of the comments about frozen foods in previous posts. We've all been there; Beer Pops are an interesting idea but not terribly practical.
A few times to practice will make propane mode easier. I prefer that mode myself, but it takes some getting used to. Be sure to turn the fridge off the propane mode before leaving the campsite. Some folks leave their fridges running on gas even while driving; I wouldn't care to do that myself...
The manuals that came with the camper should have information about using the fridge. Shame on your dealer if he/she didn't show you any of that (including how to get the grilles off and on again). If you need help, ask any fellow camper whose unit has a fridge. Those with big rigs might have had a smaller one like ours once, and might be able to help. Plus, you'll make a new friend. Take 'em a Beer Pop later on.
It's never too late to have a happy childhood!
Lee, WU0V, and Courtenay, N0ZDT
2011 Rockwood A128
2000 Silverado 1500 pickup
60W solar system
2000W inverter generator