How to Fix Samsung Refrigerator Error 4E

Error Code: Refrigerator Difficulty: Moderate

Problem: Freezer defrost sensor fault; sensor monitoring evaporator temperature during defrost cycle malfunctioning

How to Fix Refrigerator Error

1. Unplug refrigerator from electrical power.
2. Remove freezer interior panels and evaporator cover to access defrost sensor mounted on evaporator coil assembly.
3. Disconnect wiring harness from sensor connector. Note exact routing before removal.
4. Measure resistance across sensor terminals with multimeter at current temperature. Compare to service manual specifications for defrost sensor.
5. If sensor reads open circuit, shorted, or out of range: remove mounting clip or adhesive securing sensor to evaporator tube.
6. Gently extract sensor from evaporator mounting location. Clean evaporator tube surface with isopropyl alcohol.
7. Apply thermal conductive paste to sensing tip of new sensor.
8. Install replacement defrost sensor using OEM part DA32-10106R. Secure to evaporator tube with mounting clip or high-temperature adhesive.
9. Route wiring harness away from sharp evaporator edges. Reconnect harness securely.
10. Reassemble evaporator cover and interior panels. Restore power. Monitor defrost cycle operation to ensure proper termination and temperature recovery.

Still Not Working?

If the replacement part didn’t fix the issue, you may have a wiring problem or main board failure.