Samsung Refrigerators2017–present

Error Code R

Fresh food section is not sensing temperature correctly

Critical

Stop using immediately - risk of damage or safety issue

Also displayed as: R

What This Means

Bad connector contact at CN30; Sensor unit malfunction; Voltage reading outside 0.6V-4.6V range; Iced or bridged solder on PCB; Defective MICOM input at pin #5

What actually causes this:

Sensor wire loose at connector or temperature sensor bulb defective

First Thing to Check

Check if sensor connector is fully seated on the main board

Parts Involved

Refrigerator Thermistor (502AT)MICOM IC01Connector CN30

How to Fix

  1. 1

    1. Check MAIN PCB Connector CN30 insertion

  2. 2

    2. Measure voltage between CN30-5 and CN30-6 (should be 0.6V-4.6V)

  3. 3

    3. Verify input voltage at IC01 MICOM pin #5

  4. 4

    4. Inspect for iced-solder or solder bridging

  5. 5

    5. Compare measured values to temperature reference table

  6. 6

    6. Check resistance value R304 on MICOM pin #5

This Error Applies To

Samsung DRF36C100SR Series Refrigerators (2017) (2017–present)

Service manual exact match: DRF36C100SR

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