Originally Posted by david_42
If there is a set of coils or a grid of tubing on the back, then there won't be any in the walls.
There's a method of painting the sides with starch dissolved in vodka, then running the fridge, which people use on smaller units. Should work on yours.
To expand on what david said, mix corn starch and vodka, then paint it onto the fridge walls while it's running, (open the door or turn down the thermostat to make the compressor kick on). The starch/vodka mix will dry first where the coils are inside the walls of the fridge. But like he said, if there are coils on the BACK of the fridge, there are most likely none in the walls.