Is your Whirlpool refrigerator not defrosting, building up frost on the evaporator coils, or failing to maintain the right temperature? The defrost control board is the brain behind the defrost cycle — it tells the heater when to turn on and off to keep the coils clear. When it fails, frost accumulates and your refrigerator loses its ability to cool properly.
This OEM-compatible defrost control board (Part #4388931) restores proper defrost cycle management so your refrigerator runs efficiently and keeps your food at the right temperature.
Part Number: 4388931
Fits: Whirlpool refrigerator appliances
Symptoms this part fixes:
- Excessive frost buildup on evaporator coils
- Refrigerator not cooling properly
- Freezer too cold, fridge section too warm
- Defrost cycle not running
- Ice buildup blocking airflow
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