Product review (5 stars): but the fridge wasn't cool. I did some online research about this particular ...
problem solved by this cheap fix. My Ge Pfs22sisbss temperatures for fridge compartment and freezer fluctuated erratically. Freezer was cooling, but the fridge wasn't cool. I did some online research about this particular Ge model and most pointed to the motherboard, defrost heater, and the thermistor. I ordered three thermistors and replaced all. Now the fridge is working properly. I didn't need the motherboard and defrost heater.