The 39 E error means ice maker thermistor (temperature sensor) fault — sensor reading out of expected range.
The Samsung refrigerator displays the 39 E error and halts the current cycle until the underlying problem is fixed.
Check these in order. The first cause accounts for the majority of 39 E errors.
The thermistor is a small sensor that monitors ice maker temperature. It fails either open-circuit or shorted, both triggering 39 E. It's the most common cause and cheapest fix.
The connector at the ice maker thermistor is exposed to moisture over time. Corrosion on the pins creates a false open-circuit reading triggering the error.
If the thermistor tests good but the error persists, the ice maker assembly itself may have failed. The assembly includes the motor, thermostat, and ejector — replace as a unit.
If the freezer isn't maintaining 0°F (−18°C), the ice maker temperature will read outside its expected range. Check the freezer temp first before replacing sensors.
Follow these in order. Stop as soon as the error clears.
Check that the freezer is at or below 0°F (−18°C). If the freezer is too warm, address the cooling issue first.
Cut power before accessing the ice maker.
The thermistor is typically a small probe attached to the ice maker assembly inside the freezer drawer or ice maker housing.
Disconnect the connector and check for green corrosion or bent pins. Clean with contact spray or replace the connector if damaged.
At 0°F (−18°C), a good Samsung ice maker thermistor reads approximately 30–35kΩ. At room temp (~70°F) it reads ~10kΩ. OL or 0Ω = replace.
A standalone thermistor is ~$15–30. If the full assembly is needed, expect $50–120. Reconnect and restore power to test.
For warranty service, contact Samsung support ↗ or a certified appliance technician.