Not sure if this applies to yours but here's what my mfg says about AC/Propane refrigerator issues.
refrigerator operates on either 120-volt AC or propane gas and has a gravitybased cooling system. This system requires that the recreational vehicle be level
for efficient operation. The cooling coils are sloped to allow continuous movement
of the liquid chemicals and if the unit is not level for extended periods, the flow of
these chemicals will slow and pool inside the tubing, resulting in a loss of cooling.
During towing, the leveling is not as crucial as the movement of the trailer will
prevent the liquid inside the tubing from pooling. If needing to park for several
hours, the trailer should be leveled if operating the refrigerator or the refrigerator
needs to be turned off.
Placing a small bubble level inside of the refrigerator will assist in determining if level.