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

1. undefined: Step 1: Check connector between Main PCB and refrigerator sensor — if loose or disconnected, reconnect or repair connector and retest. 2. undefined: Step 2: Measure resistance at CON8 pins 20-19. If resistance = 0 ohm (short), replace the refrigerator sensor. 3. undefined: Step 3: If resistance = infinity (open), proceed to Step 4. 4. undefined: Step 4: Check temperature vs. resistance using reference table: 23°F/-5°C=38kΩ, 32°F/0°C=30kΩ, 41°F/5°C=24kΩ, 50°F/10°C=19.5kΩ, 59°F/15°C=16kΩ. 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 refrigerator 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 rS

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

Refrigerator Sensor Error Short circuit on refrigerator sensor (resistance reads 0 ohm); Open/disconnected refrigerator sensor (resistance reads infinity); Loose or damaged connector at CON8 pins 20-19

Refrigerator Sensor Error

Moderate

Address soon - your appliance may not work properly

What This Means

Short circuit on refrigerator sensor (resistance reads 0 ohm); Open/disconnected refrigerator sensor (resistance reads infinity); Loose or damaged connector at CON8 pins 20-19

How to Fix

1
Step 1: Check connector between Main PCB and refrigerator sensor — if loose or disconnected, reconnect or repair connector and retest.
2
Step 2: Measure resistance at CON8 pins 20-19. If resistance = 0 ohm (short), replace the refrigerator sensor.
3
Step 3: If resistance = infinity (open), proceed to Step 4.
4
Step 4: Check temperature vs. resistance using reference table: 23°F/-5°C=38kΩ, 32°F/0°C=30kΩ, 41°F/5°C=24kΩ, 50°F/10°C=19.5kΩ, 59°F/15°C=16kΩ. 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 refrigerator 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.