Er HS Moderate Moderate DIY

LG Refrigerator Er HS — Humidity sensor malfunction

LG Refrigerator · Error code Er HS

What Er HS Means

The humidity sensor (used on models with controlled-humidity drawers / anti-condensation heater logic) is open, shorted, or unplugged.

Symptoms

  • Er HS on display
  • Crisper drawer condensation issues
  • Anti-sweat heater may run constantly
  • Cooling otherwise normal

Common Causes

1
Disconnected sensor

Plug unseated after service.

2
Failed humidity sensor

Internal element failed.

3
Wiring damage

Harness pinched at a hinge.

4
Main control board input

Rare ADC channel failure.

How to Fix It

  1. Unplug for 5 minutes to attempt a soft reset.
  2. If code returns, locate the humidity sensor per the service manual (often near the dispenser or above the door).
  3. Reseat the plug at the sensor.
  4. Replace sensor if reseating doesn't fix it.
  5. If issue persists with a new sensor, replace the main board.

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.

Common replacement Humidity sensor View on Amazon→

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.