There has been alot of discussion here about refrigerators not cooling well, so I thought I would start a thread that may help some people understand these fridges better, and maybe help with efficiency and food cooling on the road.
Firstly, the Dometic units that are used in the R-Pod are ammonia units that do not have pumps. They cool with a chemical reaction between hydrogen and ammonia, using gravity and heat instead of a pump. The thing that is imerative for this system to work is airflow through the coils on the back of the fridge. If the air does not circulate through the coils and cool them, there is no transfer of heat from inside the unit to the outside, and they just do not work efficiently.
The trick is to route the air through the coils and out the upper vent, which means limiting the space between the coils and the back wall to less than 1", and routing the air at the top of the back through the cooling fins of the condenser.
R-Pods are built with way too much room behind the refrigerator, and since air takes the path of least resisiance, the air goes around the coils and cooling fins, instead of through them. Once I fixed this, my fridge works fine :)