Defrost ge regrigerator

The most common problem with the defrost system is a burned out defrost heater. It is located behind the frz back wall usually attached at the bottom of the aluminum cooling coils which will probably be full of ice and frost buildup. You will need to melt all the ice off the coils with something like a hair dryer. The heater is inside a glass tube and can be tested with a multimeter or sometimes you can see the break in it through the glass. In some cases there are 2 or 3 heaters at different levels. Replacement kits should include as many as needed for your model. Replace them all. 2 other parts to the defrost system are the defrost timer (usually located on the front channel under the freezer door) or the termination thermostat which is a silver disk clipped to the top of the aluminum cooling coils with 2 wires going to it. Any of those 3 parts could cause the frost buildup but the heater is the most common.