The problem
Why a Refrigerator Stops Cooling
Most people think a warm fridge means a dead compressor. Most of the time, it does not. In many fridges, all the cold is made in the freezer. A small fan then pushes that cold air through a vent into the fresh food side.
So when the fridge is warm but the freezer is cold, the problem is usually the path the air takes: a stopped fan, a frozen coil, or a stuck air door called a damper. When both sides are warm, the problem is more often in the parts that remove heat, like dirty coils, the condenser fan, or the compressor.
La Mesa summers make this worse. Inland heat, hot garages and dry Santa Ana winds force your fridge to run longer. Weak parts tend to fail on the hottest days, which is why our phones ring most from July to October.
Food safety first: the USDA says perishable food should stay at 40°F or colder. If your fridge has been above 40°F for more than 2 hours, throw out milk, meat, fish and leftovers.