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

1. undefined: Enter ice maker test mode (press and hold FILL key for 3 seconds). 2. undefined: Observe if ice maker cycles through all three stages: Harvest → Fill Water → Ice Making. 3. undefined: If ice maker does not complete all stages, check wiring harness to ice maker. 4. undefined: If wiring is intact, replace the ice maker unit. 5. undefined: If ice maker passes mechanical test but error code returns, replace the main PCB.

LG Refrigerators

Error Code E IU

Ice Maker Unit Error (general ice maker fault)

Moderate

Address soon - your appliance may not work properly

How to Fix

1
Enter ice maker test mode (press and hold FILL key for 3 seconds).
2
Observe if ice maker cycles through all three stages: Harvest → Fill Water → Ice Making.
3
If ice maker does not complete all stages, check wiring harness to ice maker.
4
If wiring is intact, replace the ice maker unit.
5
If ice maker passes mechanical test but error code returns, replace the main PCB.