Freezer not freezing, or if it is lettuce etc in fridge freezes
With fridge freezers, there is usually a solenoid at the back that controls where the refrigerent goes. It consists of a sealed valve and a solenoid coil. It is possible that this has become open circuit so cannot direct refrigerant to the freezer section.
Another alternative problem may be the thermistor in the freezer section. This sensor will tell the control board the temperature in the freezer section. If it gets it wrong, then the freezer will overcool or not cool at all. Often a manufaturer will standardise on a part, so swapping the fridge and freezer thermistors around can identify that this is the fault - then just buy another 1.
If these tests don't work, you're looking at a new control board. Second hand ones may be available.
Best of luck.
on Feb 08, 2010