Let me continue where Dave left. Thank you for the pictures. They greatly help us in trouble shooting your unit.
Let me just explain what cold be going on with your unit.
Your unit uses the sides as a condenser to let go of the heat that the unit produces to cool the inside of the unit. This is how refrigeration works. If there are a lot of heat that needs to be taken out inside the unit, then the side walls would be very hot. That is normal, but as soon as the heat inside has been taken out, meaning the load inside has cool down, then the heat on the side of the nit would become minimal and could even stop if the compressor stops because the temperature inside the nit has reached the setting of the thermostat.
Now, as Dave has stated, this heat at the side of the unit would not go away if there are a lot of heat inside the unit. And these heat cold be after you just placed a load of food from the market, or if the light bob is not turning off or if there are damage on the door seal and air can seep inside and would become a heat load.
If it is just a big load of food that was recently brought inside the fridge or freezer
, than I can say, it is normal for the sides to get hot and the heat would recede after 24 hours or as soon as the food inside has cooled down.
If it is not a food load problem, then you have to find out if the light bulb is to turning off. At night, turn off the kitchen light and slowly close the fridge door, watch if the light inside the fridge would turn off. If it does not, then that is your problem. I would suggest that you remove the bulb for a while to cool down the fridge first before we trouble shoot your unit again.
If the bulb is turning off, then check the gasket ( door seal ) if it is sealing properly, specially the bottom part where it is hard to see. If the seal is broken, then replace the door seal. If no problem is found, then it is not the door seal.
I do not see a fan near your compressor so your unit does not have a fan near the compressor.
I saw your compressor is being cooled by a plastic container that catches the water condensate from the unit.
To help the compressor cool down, check if this plastic container has water on it. If it is dry or very little water, you can add some water to it to cool the compressor and it might help cool down the sides of the nit as well.
Observe it for 24 hours. Set the thermostat to the middle position as well. If you set it to maximum cooling, then the sides would get hotter as well because the compressor would run longer to reach the set temperature.
By the way, is the freezer cooling very well? As well as the fridge?