Error Code 4C
Freezer defrost sensor is not responding
Moderate
Address soon - your appliance may not work properly
Also displayed as: 4C
What This Means
Sensor housing separation; Incomplete contact; Open-circuited wire; Short-circuit; Abnormal temperature reading
What actually causes this:
Defrost sensor loose or broken connection
First Thing to Check
Check defrost sensor connector is properly connected
Parts Involved
How to Fix
- 1
Measure voltage of PCB Sensor Check Point #3
- 2
Check Main PCB CN30 pins 1 and 4
- 3
Verify voltage is within 4.5V~1.0V range
- 4
Compare to temperature table after measurement
This Error Applies To
Samsung RF28K9070A Series Refrigerators (2018) (2018–present)
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