Er Ad Serious Hard — consider a tech

LG Refrigerator Er Ad / Er dr — Auto-door / motorized door fault

LG Refrigerator · Error code Er Ad

What Er Ad Means

On models with the InstaView auto-open or auto-close door, the door motor or its position sensor can't reach the commanded position or isn't returning feedback.

Symptoms

  • Er Ad or Er dr on display
  • Auto-door won't open or close on command
  • Auto-door alarm beeps
  • Door motor whines or stops mid-cycle

Common Causes

1
Failed door motor

Motor or gearbox in the door mechanism failed.

2
Bad reed switch / position sensor

Door position feedback lost.

3
Obstruction in door swing path

Wall or cabinet preventing full swing.

4
Damaged door wiring

Wire harness through the hinge frayed.

5
Main / door control board

Driver circuit failure.

How to Fix It

  1. Unplug for 5 minutes and retry — clears soft faults.
  2. Verify nothing is blocking full door travel.
  3. Disable auto-door function in settings (if available) to confirm the mechanical hinge is OK.
  4. Inspect hinge-area harness for damage.
  5. Repair typically requires LG service due to door teardown complexity.
  6. Replace the door motor/sensor assembly under warranty if eligible.

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 Fault Er CO Er CO — Compressor / Communication Fault

All LG codes → All refrigerator codes →

Verified against manufacturer documentation: lg.com

Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician.