5E
Samsung Refrigerator
Severity: ModerateWhat Does This Error Mean?
The 5E error means the fridge defrost sensor in your Samsung refrigerator has a problem. This sensor monitors temperature during the automatic defrost cycle. When it fails, frost builds up on the evaporator coils and cooling performance drops.
Affected Models
- RF28R7351SR
- RF23M8070SR
- RF263BEAESR
- Most Samsung French door and side-by-side refrigerators
Common Causes
- Faulty defrost temperature sensor giving incorrect readings
- Heavy frost or ice buildup on the sensor itself
- Loose or damaged wiring connection at the defrost sensor
- Defrost heater not working, causing the sensor to read abnormal temperatures
- Main control board not processing the defrost sensor signal properly
How to Fix It
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Unplug the refrigerator for 5 minutes to reset the control board.
This clears temporary sensor errors that can trigger the 5E code.
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Plug it back in and monitor the fridge for the next 24 hours.
If the error does not return, it was likely a one-time glitch.
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Check the back wall inside the freezer for a thick sheet of ice.
Heavy frost on the back panel means the defrost system is not working properly.
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If frost is present, unplug the fridge for 8–12 hours to fully defrost.
Leave the doors open and place towels on the floor to catch water.
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If the error returns after defrosting, call a technician for diagnosis.
They will test the defrost sensor, heater, and thermostat to find the failed part.
When to Call a Professional
If the error returns after defrosting and resetting, the defrost sensor needs replacement. Contact Samsung support or a licensed appliance technician. Expect repair costs of $120–$220 for a defrost sensor replacement. Do not ignore this error — poor defrosting leads to cooling failure over time.
Frequently Asked Questions
What happens if I ignore the 5E error?
Frost will gradually build up on the evaporator coils. This blocks airflow and the fridge gets warmer over time. Eventually the freezer and fridge will stop cooling properly. Food spoilage is the main risk if left unrepaired.
Can I manually defrost to fix the 5E error?
Manual defrosting can help temporarily. Unplug the fridge for 8–12 hours to melt all the ice. But if the sensor is truly faulty, the frost will return within a week or two. Manual defrosting every few weeks is not a long-term solution.
How do I know if it is the sensor or the defrost heater?
You usually cannot tell without a multimeter test. A technician will check both the sensor and heater for continuity. If the sensor reads out of range, it is the sensor. If the heater has no continuity, it is the heater. Sometimes both need replacement.