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.
Remember one unassailable statistic, as explained by the late, great George Carlin: "Just think of how stupid the average person is, and then realize half of them are even stupider!"
"I would like to die on Mars, just not on impact." Elon Musk