Error Code 13
Humidity sensor is faulty or disconnected
Moderate
Address soon - your appliance may not work properly
Also displayed as: F and R LEDs blink (item 13)
What This Means
Disconnected humidity sensor connector; Failed humidity sensor (HTG3515CH or HTG3535CH); Damaged wiring; Failed MAIN PCB input circuit at IC01 MICOM pin 11
What actually causes this:
The sensor that measures humidity inside the fridge compartment has failed
First Thing to Check
Check that the humidity sensor connector at CN51 is firmly plugged into the MAIN PCB
Parts Involved
How to Fix
- 1
Check voltage at CN51 pin 4 (FLAT_WHT) to CN51 pin 8 (FLAT_WHT); should be 3.5V to 1.0V
- 2
Verify connector is fully inserted
- 3
Measure resistance at CN51-4 to CN51-8; should read about 50 ohm with open sensor
- 4
If MICOM pin 11 input is abnormal, check soldering or replace PCB
This Error Applies To
Samsung RF18A5101 Series Refrigerators (2021) (2021–present)
Related Error Codes
Fridge compartment defrost sensor is faulty or disconnected
Fridge temperature sensor is open, shorted, or disconnected
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Freezer defrost heater or its protection device has failed
Freezer defrost sensor is faulty or its protective bimetal/fuse has opened
Fridge compartment defrost heater or protection device has failed
Freezer temperature sensor is open, shorted, or disconnected
External ambient temperature sensor is open, shorted, or disconnected