Samsung Refrigerators

Error Code 5°C LED LAMP

Defrosting heater stops too quickly before cycle completes

Moderate

Address soon - your appliance may not work properly

Also displayed as: 5°C indicator LED lamp

What This Means

Defrosting heater housing lost or in poor contact; Heater wire short circuit or broken; Temperature fuse in poor conditions; Heater power supply voltage too low; Defrosting relay malfunction

What actually causes this:

Heater power is insufficient due to low voltage or broken connection

First Thing to Check

Check if refrigerator is plugged into outlet with stable voltage; verify no brown discoloration on heater element

Parts Involved

Defrosting heaterThermal fuseDefrosting relayPower supply circuit

How to Fix

  1. 1

    1. Monitor defrost cycle duration after heater activation

  2. 2

    2. If heating stops within 5 minutes, indicates low voltage condition

  3. 3

    3. Measure resistance between heater terminals #1 and #3

  4. 4

    4. Check heater voltage supply during defrost cycle

  5. 5

    5. Verify thermal fuse resistance and continuity

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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