Error Code 5
Fresh food defrost cycle sensor is not working
Moderate
Address soon - your appliance may not work properly
Also displayed as: 5
What This Means
Thermistor disconnected or loose connector; Thermistor defective or shorted; Main PCB connector failure; Wiring harness damage between sensor and Main PCB
What actually causes this:
The defrost sensor connection loosened or the sensor itself failed
First Thing to Check
Check the connector behind the refrigerator near the defrost components
Parts Involved
How to Fix
- 1
1. Check Main PCB CN30-8 to CN76-1 voltage — normal range: 4.5V to 1.0V
- 2
2. Reconnect thermistor connector if loose
- 3
3. Measure thermistor resistance: 5.0 kΩ at 77°F (25°C)
- 4
4. Replace thermistor if open or shorted
This Error Applies To
Samsung RF22NP Series Refrigerators (2018) (2018–present)
Related Error Codes
Ice maker water sensor is not working
Fresh food compartment temperature sensor is not working
FlexZone compartment temperature sensor is not working
Freezer fan is not running
Freezer temperature sensor is not working
Room temperature sensor is not working
Ice maker compartment temperature sensor is not working
Freezer defrost heater is not working