My frdge has stooped cooling because the evaporator inside the fridge section has froozen up. I thawed out the ice and everything seemed to work fine for 5 days and then the problem happened again. Could the problem be with the Heate (Part Number AP4137756 item #11) that is located in the fridge compartment and it is not thawing out the evaporator. Or, do I need the whole evaporator assembly:eek: Any suggestions will be greatly appreciated.