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Samsung Refrigerators2019–present

Error Code 15C

Ice room thermistor is out of range

Critical

Stop using immediately - risk of damage or safety issue

Also displayed as: 15C

What This Means

Failed ice room thermistor; Bad connector contact at CN90 pin 2; Wiring short or open

What actually causes this:

Failed thermistor in ice room compartment

First Thing to Check

Measure resistance at CN90 pins 2 to 4 with power off

Parts Involved

Ice Room Sensor Thermistor 502ATMAIN PCBConnector CN90

How to Fix

  1. 1

    With power off, measure resistance at CN90-2(GRY) to CN90-4(YEL)

  2. 2

    With power on, measure voltage at CN90-2(GRY) vs CN90-13 (GND): should be 0.6V to 4.6V

  3. 3

    Check MICOM IC01 pin #11 input voltage

  4. 4

    Verify R919 resistor on PCB

This Error Applies To

Samsung RF28R7551S Series Refrigerators (2019) (2019–present)

Service manual exact match: RF22R7551**Service manual exact match: RF22R7551DTService manual exact match: RF28R75*Service manual exact match: RF28R7551SGService manual exact match: RF22R75*Service manual exact match: RF28R7551DTService manual exact match: RF28R7551**Service manual exact match: RF22R7551SG

Related Error Codes

FF High Temp

Refrigerator temperature is abnormally high

13E

Humidity sensor voltage is outside valid range (0.6V to 4.7V)

14C

Ice maker thermistor is out of range — ice making may be disrupted

39C

Ice maker motor did not complete its initialization cycle

FZ High Temp

Freezer temperature is abnormally high

Flex High Temp

Flex zone compartment temperature is abnormally high

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