Wait pump the brakes...Look inside the fridge at the right aluminum fin, is there a white slider that can go up and down the fin?? is there any stickers there that says this is colder or warmer?...It may be a failing thermostator if your fridge has one but you need to check the stove pipe...you may have a heating element that has failed ...did you check the fuses for the heating element..out of level is maybe not your issue. If the stove pipe is not warm to the touch then go from there.. again, power heating element, fuse. If it is warm check to make sure you don't have a blockage either. If the outside stove pipe is cold well you can go from there.