Samsung Refrigerators

Error Code -15°C LED LAMP

Defrost cycle cannot be properly detected or controlled

Critical

Stop using immediately - risk of damage or safety issue

Also displayed as: -15°C indicator LED lamp

What This Means

Poor open circuit connection; Short circuit in sensor wiring; Defrosting temperature sensor malfunction; Connector pin degradation

What actually causes this:

Faulty defrost sensor prevents proper timing and completion of auto-defrost

First Thing to Check

Observe if frost buildup occurs in freezer despite running; check for ice on evaporator

Parts Involved

Defrosting sensor (temperature sensor)CN30 connector pins 4 and 7Sensor wiring

How to Fix

  1. 1

    1. Check voltage between MAIN PCB CN30-4(RED) and 7(Gray)

  2. 2

    2. Voltage should be within 4.6V~0.6V

  3. 3

    3. Verify defrost cycle temperature sensor operation

  4. 4

    4. Inspect CN30 connector pin 4 for corrosion

This Error Applies To

Samsung RB12A3006 Series Refrigerators

Service manual exact match: RB12A300631/AAService manual exact match: RB12A300635/AAService manual exact match: RB12A300641/AA

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