Maytag Refrigerator MSD2659KEB Freezer not defrosting

This evaporator defrost heater melts frost from the evaporator coil during the automatic defrost cycle to restore airflow and stable temperatures. Replacing a failed heater helps prevent ice buildup that restricts cooling and leads to warm spots. What it does:

• Heats the evaporator coil to clear frost/ice during defrost
• Helps maintain proper airflow between freezer and fresh food sections
• Typical symptoms: heavy frost on the back panel/evaporator, weak cooling or rising temperatures
• Also cause evaporator fan noise from ice contact and longer run times

• 1 evaporator defrost heater

• Disconnect power before servicing; allow any ice to thaw
• Access the heater behind the freezer's rear panel; avoid damaging fins or refrigerant lines
• Secure the heater and route wires exactly as original, keeping them clear of the fan and sharp edges
• Restore power and verify the defrost cycle per the service procedure