Error Code R DEF
Defrost heating sensor in fridge section is not working
Moderate
Address soon - your appliance may not work properly
Also displayed as: R DEF
What This Means
Bad connector contact at CN30; Defrost sensor unit malfunction; Voltage reading outside 0.6V-4.6V range; Iced-solder or solder bridging; Defective MICOM input at pin #3
What actually causes this:
Sensor disconnected or broken from ice buildup around heater
First Thing to Check
Inspect defrost sensor wire for ice accumulation or damage
Parts Involved
How to Fix
- 1
1. Check MAIN PCB Connector CN30 insertion
- 2
2. Measure voltage between CN30-3 and CN30-4 (should be 0.6V-4.6V)
- 3
3. Verify input voltage at IC01 MICOM pin #3
- 4
4. Inspect for iced-solder or bridging issues
- 5
5. Compare to temperature reference table
- 6
6. Check resistance value R303 on MICOM pin #3
This Error Applies To
Samsung DRF36C100SR Series Refrigerators (2017) (2017–present)
Related Error Codes
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Defrost heating sensor in freezer section is not working
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Ice maker temperature sensor is not reading correctly
Freezer is not getting cool air circulation