This video provides step-by-step repair instructions for replacing the defrost heater on a Whirlpool Matrix refrigerator (Model WRT318FMDB02). The most common reason for replacing this part is if the evaporator coils are freezing over.
All of the information for this video is applicable to the following brands: Whirlpool, Maytag, Amana, Kitchenaid, Kenmore