How do I fix error code R-SENSOR on a Samsung refrigerators?

1. undefined: Check MAIN PCB CN30 connector is properly inserted 2. undefined: Measure voltage between MAIN PCB CN30 pin 9 and pin 11 for standard models 3. undefined: For RT48A6004** model: measure between CN30 pin 10 and pin 8 4. undefined: Voltage should be within 4.5V to 0.5V 5. undefined: Replace sensor if voltage is out of range and connectors are good

Samsung Refrigerators2021–present

Error Code R-SENSOR

Refrigerator compartment temperature sensor is open or shorted

Critical

Stop using immediately - risk of damage or safety issue

Also displayed as: -17 deg C LED Lamp blinking

What This Means

Connector slipped out or poor contact; Wire cut or short circuit; Abnormal sensing temperature above +65 deg C or below -50 deg C; Defective thermistor

What actually causes this:

Disconnected, damaged, or failed refrigerator thermistor

First Thing to Check

Check CN30 connector seating; measure voltage at CN30 pins 9 and 11 or 10 and 8 for RT48A6004**

Parts Involved

R-Sensor Thermistor 502ATCN30 connectorMAIN PCB

How to Fix

1
Check MAIN PCB CN30 connector is properly inserted
2
Measure voltage between MAIN PCB CN30 pin 9 and pin 11 for standard models
3
For RT48A6004** model: measure between CN30 pin 10 and pin 8
4
Voltage should be within 4.5V to 0.5V
5
Replace sensor if voltage is out of range and connectors are good

This Error Applies To

Samsung RT Series Refrigerators (2021) (2021–present)

Service manual exact match: RT16A6195**Service manual exact match: RT48A668***Service manual exact match: RT48A6004**Service manual exact match: RT16A610***Service manual exact match: RT16AService manual exact match: RT48A*Service manual exact match: RT48A683F**Service manual exact match: RT16A619***+2 more