
This DIY repair guide gives step-by-step instructions on how to replace the diffuser in a side-by-side refrigerator. The diffuser, also called an air damper, controls cold air flow from the freezer compartment to the refrigerator compartment. If the diffuser is stuck fully open, food in the refrigerator compartment freezers. If it's stuck closed, the refrigerator becomes too warm but the freezer stays cold. If the diffuser doesn't control the cold air flow correctly, replace it with the manufacturer-approved side-by-side refrigerator part that fits your model.
This basic repair procedure works for many Kenmore, Whirlpool, KitchenAid, GE, Maytag, Amana, Frigidaire, Electrolux and LG side-by-side refrigerators.