How do I fix error code F dS on a LG refrigerators?

1. undefined: Check for loose or disconnected connector between Main PCB, Defrost Controller, and sensor at CON4 pins 22~21. 2. undefined: If connector is loose, reconnect or repair the connector. 3. undefined: Measure sensor resistance at CON4 pins 22~21. If 0 ohm (short), replace the defrost sensor. 4. undefined: If resistance is infinite/open, replace the defrost sensor. 5. undefined: Check temperature vs. resistance. If outside table values, replace the sensor. 6. undefined: If resistance is normal, explain normal operation to customer. 7. undefined: If the defrost sensor was replaced and error persists, replace the main PCB.

LG Refrigerators2020–present

Error Code F dS

Freezer Defrost Sensor Error — short or open circuit in the freezer defrost sensor

Moderate

Address soon - your appliance may not work properly

Also displayed as: F dS

How to Fix

1
Check for loose or disconnected connector between Main PCB, Defrost Controller, and sensor at CON4 pins 22~21.
2
If connector is loose, reconnect or repair the connector.
3
Measure sensor resistance at CON4 pins 22~21. If 0 ohm (short), replace the defrost sensor.
4
If resistance is infinite/open, replace the defrost sensor.
5
Check temperature vs. resistance. If outside table values, replace the sensor.
6
If resistance is normal, explain normal operation to customer.
7
If the defrost sensor was replaced and error persists, replace the main PCB.

This Error Applies To

LG LRMVS3006D Series Refrigerators (2020) (2020–present)

Service manual exact match: LRMVC2306SService manual exact match: LRMVC2306DService manual exact match: LRMDS3006DService manual exact match: LRMDS3006SService manual exact match: LRMVS3006DService manual exact match: LRMVS3006SService manual exact match: LRMDC2306SService manual exact match: LRMDC2306D

Related Error Codes

E FS

Freezer Sensor Error — short or open circuit in the freezer thermistor

E rS

Refrigerator Sensor Error — short or open circuit in the fresh food compartment thermistor

r dS

Refrigerator Defrost Sensor Error — short or open circuit in the refrigerator defrost sensor

E HS

Humidity Sensor Error — short or open circuit in the humidity sensor

E CS

Convertible (Pantry/Full Convert) Sensor Error — short or open circuit in the pantry drawer sensor

E rt

Room Temperature Sensor Error — short or open circuit in the ambient room temperature sensor

E IS

Icing Sensor Error — short or open circuit in the icing compartment (in-door icemaker) sensor

E It

In-door Icemaker Kit Error — electrical system error (motor, gear, Hall IC, operation circuit) within in-door icemaker

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