LG Refrigerators

Error Code F dS

Defect of freezer defrosting sensor

Moderate

Address soon - your appliance may not work properly

How to Fix

  1. 1

    Check for a loose or disconnected connector between Main PCB, Defrost Controller, and the defrost sensor.

  2. 2

    If loose or disconnected, reconnect or repair.

  3. 3

    Measure sensor resistance at CON8 pins 26-25 with power off. If 0 ohm (shorted), change Fuse-M.

  4. 4

    If resistance is open/infinite, replace the refrigerator (main PCB or sensor assembly).

  5. 5

    If resistance reads a finite value, compare to table: 23°F/-5°C=38k, 32°F/0°C=30k, 41°F/5°C=24k, 50°F/10°C=19.5k, 59°F/15°C=16k. If resistance is normal for temperature, explain normal operation to customer.

  6. 6

    If resistance is abnormal, replace defrost sensor assembly.

This Error Applies To

LG LF30S8210S Series Refrigerators

Service manual exact match: LF30S8210S

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