The freezer is not self defrosting and getting iced up completely. Meanwhile, the refrigerator is not cold/loosing tempurature. I have defrosted the entire unit and plugged back in. It works for few days and then it happens again.

David, October 2006

I have the same problem. I defrosted the coils by unplugging the refrigerator and poring hot/warm water into the coils. You have to remove the inside rear panel on the back wall of the freezer side. Catch the water with a sponge under the coils to avoid overfilling the pan underneath the refrigerator. This will buy you another week of normal operation until if freezes again.
What a piece of junk. No more Kenmores after this for me, mine is only 4 years old. I am still trying to figure out what is causing it no to defrost.

crof, March 2010

My problem turned out to be the clip on thermostat!

doc, September 2009

I am having the same problems, if anyone knows, please explain.

Mike, June 2009

The defrost heater element or the wiring of the element are at fault.

RBC1026, December 2006