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
How to Fix
- 1
Check MAIN PCB connectors CN30 and CN76 are fully seated
- 2
Measure resistance between CN30 #8 (Sky-blue) and CN76 #1 (Gray) — compare to DATA1 temperature table
- 3
Measure voltage at CN30 #8 (Sky-blue) vs REG1 HEAT SINK ground — should be 0.6V to 4.6V
- 4
Check IC01 MICOM pin #74 input voltage is within 0.6V–4.6V
- 5
Check SENSOR MARKING #5 (R313) on PCB for cold solder
This Error Applies To
Samsung RF267AERS Series Refrigerators (2009) (2009–present)
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