Samsung Refrigerators2009–present

Error Code R-1-3

Refrigerator defrost temperature sensor is open, shorted, or out of range

Moderate

Address soon - your appliance may not work properly

Also displayed as: R-1-3 (LED blink pattern on panel)

What This Means

Connector at CN30/CN76 loose or disconnected; Sensor wire disconnected or shorted; Sensor temperature above 149°F (65°C) or below -58°F (-50°C); Failed 502AT sensor unit

What actually causes this:

Sensor has failed or its connector worked loose during a previous service.

First Thing to Check

Re-seat the Sky-blue wire connector at CN30 pin 8 on the main board.

Parts Involved

R-DEF Sensor (502AT)Main PCB (CN30, CN76 connectors)

How to Fix

  1. 1

    Check MAIN PCB connectors CN30 and CN76 are fully seated

  2. 2

    Measure resistance between CN30 #8 (Sky-blue) and CN76 #1 (Gray) — compare to DATA1 temperature table

  3. 3

    Measure voltage at CN30 #8 (Sky-blue) vs REG1 HEAT SINK ground — should be 0.6V to 4.6V

  4. 4

    Check IC01 MICOM pin #74 input voltage is within 0.6V–4.6V

  5. 5

    Check SENSOR MARKING #5 (R313) on PCB for cold solder

This Error Applies To

Samsung RF267AERS Series Refrigerators (2009) (2009–present)

Service manual exact match: RF26XAERS/XAAService manual exact match: RF267AFBP/XACService manual exact match: RF267AEBP/XAAService manual exact match: RF26XAEPN/XAAService manual exact match: RF267AERS/XAAService manual exact match: RF267AEPN/XAAService manual exact match: RF267AFRS/XACService manual exact match: RF267AEWP/XAA

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