Whirlpool Refrigerator Defrost Heater Assembly WPW10436849, Replaces W10436849

Is This the Right Part?

✅ Cross Reference Information

Common Symptoms

• Heavy frost or ice buildup on the evaporator cover or coils
• Freezer evaporator coils frozen over
• Refrigerator section warming because airflow is restricted by frost
• Refrigerator or freezer running continuously while cooling performance declines

Check Before Replacing

• With the refrigerator unplugged, visually inspect the evaporator area for excessive frost or ice; this confirms a defrost-system symptom but does not identify the failed component.
• After disconnecting the heater wiring, check the heater for electrical continuity with a multimeter; an open circuit indicates a failed heater, while continuity does not rule out the defrost thermostat, wiring, or control.
• Do not apply live voltage or bypass safety devices during diagnosis; use the appliance-specific service documentation for any energized diagnostic test.

Pro Tip

Part Details

Installation Notes

• Disconnect electrical power before accessing or replacing the heater.
• Access to the evaporator and heater varies by refrigerator model; use the model-specific service or repair instructions.
• Remove accumulated ice carefully and allow the evaporator area to defrost before fitting the replacement; avoid damaging the evaporator tubing or wiring.
• Reconnect the heater wiring exactly as originally routed and connected, and verify that wiring is clear of the fan and sharp sheet-metal edges before reassembly.

Verified Compatible Models

10673002510, 10673002511, 10673003510, 10673003511, 10673009510, 10673009511, 10679402410, 10679472410, 10679472411, 10679473410, 10679473411, 59673002510, 59673003510, 59673003511, 59673009510, IX5BBEXDS00, IX5BBEXDS01, KFFS20EYBL00, KFFS20EYBL01, KFFS20EYBL02, KFFS20EYBL04, KFFS20EYMS00, KFFS20EYMS01, KFFS20EYMS02, KFFS20EYMS04, KFFS20EYWH00, KFFS20EYWH01, KFFS20EYWH02, KFFS20EYWH04, KRFF300EBL00, KRFF300ESS00, MFB2055YEB01, MFF2055YEW01, MFW2055FRZ00, MFW2055YEM00, MFW2055YEM02, MFW2055YEW01, WRF560SEHV00, WRF560SEHZ00, WRF560SEYB00, WRF560SEYM00, WRF560SEYW00, WRF560SFHV00, WRF560SFYM00, WRF560SFYM04, WRF560SMHZ00, WRF560SMYE00, WRF560SMYH03, WRFA60SMHN00, WRF560SEYM05, WRF560SFYH04

Fitment reminder: Match the complete appliance model number, including suffix or revision where applicable, before ordering.