3EWarning
Samsung Refrigerator 3E Error Code
The refrigerator compartment temperature sensor is reading out of range.
Common causes
- Faulty sensor
- Wiring harness damage
- Connector corrosion
How to fix it
- Locate the sensor (usually near the evaporator in the fridge section) and measure resistance.
- Replace sensor if resistance is not within spec (typically 2-10k ohms depending on temp).
- Check for loose connection at the main board.
⚠ When to call a pro: If sensor replacement does not resolve, the control board may need service.
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Always unplug the appliance (and turn off the water for washers/dishwashers) before inspecting. These guides are for information only and are not a substitute for a professional repair.