LG · Refrigerator Moderate

Er EIU — Freezer-compartment ice maker assembly failure

LG documents EIU as a freezer-compartment ice maker assembly failure — the assembly reported an internal fault (motor, controller, or harvest mechanism). It typically requires replacing the ice maker assembly.

Keep using it?
Yes, with caution
DIY difficulty
Hard
Verified against
lg.com ↗

How to fix it

  1. Unplug and remove the ice bin/assembly.
  2. Thaw any visible ice block with warm water and dry thoroughly.
  3. Reseat the assembly harness.
  4. Run the self-test per owner manual.
  5. If Er EIU returns, replace the in-door ice maker assembly.

Why it happens

Typical signs: Er EIU on display · Ice maker non-functional · Harvest motor stalled · Self-test fails

  • Failed icemaker module Internal motor or controller dead.
  • Jammed harvest mechanism Ice clump locks the assembly.
  • Damaged harness Door-hinge wiring broken.

Replace your water filter

A clogged or overdue water filter is a common cause of low water and ice flow on LG refrigerators — they are meant to be changed about every 6 months. The OEM-style filter that fits most LG refrigerators is the LT1000P ($45-55 OEM, $18-28 compatible).

  • LG LT1000P refrigerator water filter OEM water filter
    Amazon →

Not sure which filter fits your model? See the full compatibility guide →

Parts you may need

If diagnosis points to a failed part, these are the common replacements. As an Amazon Associate we earn from qualifying purchases.

  • In-door ice maker assembly Common replacement
    Amazon →

Related repair guides

LG Refrigerator Water Filter Guide (LT1000P, LT800P & More) →Refrigerator Ice Maker Not Making Ice — Causes & Fix →Refrigerator Water Dispenser Slow or Not Working — Fixes →Refrigerator Water Tastes Bad or Smells — Causes & Fix →

More LG refrigerator codes

22 22 — Compressor relay / inverter control fault 33 33 — Compressor / defrost test fault 67 67 — Door open / not fully closed 88 88 — Power-on display test (not a fault) Er CF Er CF — Condenser fan motor feedback fault Er CO Er CO — Communication error (main board ↔ display)

All LG codes → All refrigerator codes →

Frequently asked questions

What does the Er EIU code mean on a LG refrigerator?

LG documents EIU as a freezer-compartment ice maker assembly failure — the assembly reported an internal fault (motor, controller, or harvest mechanism). It typically requires replacing the ice maker assembly.

What causes the Er EIU code on a LG refrigerator?

Failed icemaker module: Internal motor or controller dead. Jammed harvest mechanism: Ice clump locks the assembly. Damaged harness: Door-hinge wiring broken.

Is it safe to keep using a LG refrigerator with a Er EIU error?

Yes, with caution. This is rated a moderate-severity fault.

How do I fix Er EIU on a LG refrigerator?

Unplug and remove the ice bin/assembly. Thaw any visible ice block with warm water and dry thoroughly. Reseat the assembly harness.

Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician. Verified against manufacturer documentation: lg.com.