How do I fix error code E FS on a LG refrigerators?

1. undefined: Step 1: Check connector between Main PCB and freezer sensor — if loose or disconnected, reconnect or repair connector and retest. 2. undefined: Step 2: Measure resistance at CON8 pins 22-21. If resistance = 0 ohm (short), replace the freezer sensor. 3. undefined: Step 3: If resistance = infinity (open), proceed to Step 4. 4. undefined: Step 4: Check temperature vs. resistance using reference table: -22°F/-30°C=40kΩ, -13°F/-25°C=30kΩ, -4°F/-20°C=23kΩ, 5°F/-15°C=17kΩ, 14°F/-10°C=13kΩ, 23°F/-5°C=10kΩ, 32°F/0°C=8kΩ. If resistance matches expected value for measured temperature, no problem — explain to customer. 5. undefined: Step 5: If resistance does not match expected table value, replace the freezer sensor. 6. undefined: Step 6: Check sensor harness connection integrity — if abnormal, reconnect or repair connector. 7. undefined: Step 7: If all above steps are OK and error persists, replace the refrigerator main PCB.

LG Refrigerators2023–present

Error Code E FS

Q: What does error code E FS mean on a LG refrigerators?

Freezer Sensor Error Short circuit on freezer sensor (resistance reads 0 ohm); Open/disconnected freezer sensor (resistance reads infinity); Loose or damaged connector at CON8 pins 22-21

Freezer Sensor Error

Moderate

Address soon - your appliance may not work properly

What This Means

Short circuit on freezer sensor (resistance reads 0 ohm); Open/disconnected freezer sensor (resistance reads infinity); Loose or damaged connector at CON8 pins 22-21

How to Fix

1
Step 1: Check connector between Main PCB and freezer sensor — if loose or disconnected, reconnect or repair connector and retest.
2
Step 2: Measure resistance at CON8 pins 22-21. If resistance = 0 ohm (short), replace the freezer sensor.
3
Step 3: If resistance = infinity (open), proceed to Step 4.
4
Step 4: Check temperature vs. resistance using reference table: -22°F/-30°C=40kΩ, -13°F/-25°C=30kΩ, -4°F/-20°C=23kΩ, 5°F/-15°C=17kΩ, 14°F/-10°C=13kΩ, 23°F/-5°C=10kΩ, 32°F/0°C=8kΩ. If resistance matches expected value for measured temperature, no problem — explain to customer.
5
Step 5: If resistance does not match expected table value, replace the freezer sensor.
6
Step 6: Check sensor harness connection integrity — if abnormal, reconnect or repair connector.
7
Step 7: If all above steps are OK and error persists, replace the refrigerator main PCB.