What does error code FRIDGE_SENSOR mean on a Samsung refrigerators?

Fridge compartment temperature sensor reading is out of range Sensor connector CN20 pin 9/11 not fully seated; Thermistor open or shorted; Wiring damage

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

1. undefined: Verify voltage at MAIN PCB CN20 pins 9 and 11 is between 1.0V and 4.5V 2. undefined: Disconnect CN20 and measure resistance at R : CN20 '9' ↔ '11' 3. undefined: Compare resistance reading to DATA1 temperature table 4. undefined: Check IC01 MICOM pin 5 for normal input voltage

Samsung Refrigerators2023–present

Error Code FRIDGE_SENSOR

Fridge compartment temperature sensor reading is out of range

Moderate

Address soon - your appliance may not work properly

Also displayed as: R blinks (fridge LED)

What This Means

Sensor connector CN20 pin 9/11 not fully seated; Thermistor open or shorted; Wiring damage

What actually causes this:

The sensor measuring fresh food compartment temperature has failed or disconnected, so the board cannot regulate fridge temperature properly.

First Thing to Check

Check that the fridge sensor connector at MAIN PCB CN20 is fully and firmly seated.

Parts Involved

Thermistor 502AT (R-sensor)MAIN PCB CN20

How to Fix

1
Verify voltage at MAIN PCB CN20 pins 9 and 11 is between 1.0V and 4.5V
2
Disconnect CN20 and measure resistance at R : CN20 '9' ↔ '11'
3
Compare resistance reading to DATA1 temperature table
4
Check IC01 MICOM pin 5 for normal input voltage

This Error Applies To

Samsung RF23BB89 Series Refrigerators (2023) (2023–present)

Service manual exact match: RF29BB89***Service manual exact match: RF24BB66***Service manual exact match: RF30BB62***Service manual exact match: RF29BB82***Service manual exact match: RF30BB69***Service manual exact match: DRF36C300**Service manual exact match: RF24BB69***Service manual exact match: RF30BB66***+2 more