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

1. undefined: 1. Check voltage at MAIN PCB CN20-9 to CN20-11 2. undefined: 2. Expected voltage range: 4.5V to 1.0V 3. undefined: 3. If out of range, test thermistor resistance

Samsung Refrigerators2010–present

Error Code R

Q: What does error code R mean on a Samsung refrigerators?

Fridge temperature sensor not working Broken temperature sensor wiring; Thermistor 502AT failure; Connector CN20 pin 9-11 open or shorted

Fridge temperature sensor not working

Critical

Stop using immediately - risk of damage or safety issue

Also displayed as: LED blinks

What This Means

Broken temperature sensor wiring; Thermistor 502AT failure; Connector CN20 pin 9-11 open or shorted

What actually causes this:

Temperature sensor wiring loose or thermistor has failed

First Thing to Check

Check connector CN20 pins 9-11 for loose or bent pins

Parts Involved

Thermistor 502AT (Fridge)

How to Fix

1
1. Check voltage at MAIN PCB CN20-9 to CN20-11
2
2. Expected voltage range: 4.5V to 1.0V
3
3. If out of range, test thermistor resistance

This Error Applies To

Samsung RF24R7201 Series Refrigerators (2010) (2010–present)

Service manual exact match: RF24R7201AAService manual exact match: RF24R7201EGService manual exact match: RF24R7201SAService manual exact match: RF24R7201EOService manual exact match: RF24R7201APService manual exact match: RF24R7201EUService manual exact match: RF24R7201EFService manual exact match: RF24R7201FA