LG Refrigerator Error Er HS — What It Means & How to Fix It

What Does This Error Mean?

Er HS means the humidity sensor in your LG refrigerator has a fault. The humidity sensor measures moisture levels inside the fresh food compartment. LG uses this reading to manage the crisper drawers and keep produce fresh longer. When the sensor fails, the refrigerator cannot optimize humidity levels for your fruits and vegetables. This is a moderate issue — your refrigerator will still cool, but produce storage will be affected.

Affected Models

LRMVS3006S
LFXS26973S
LRFXS2503S
LRMDC2306S
LSXS26366S
LG French door and side-by-side models with humidity-controlled crispers

Common Causes

The humidity sensor has failed due to age or moisture damage
Water from condensation or a spill has gotten into the sensor and damaged its electronics
The sensor wiring connector has corroded from the humid environment inside the refrigerator
The sensor probe has been physically damaged — knocked loose during cleaning or loading
The main control board has developed a fault affecting how it reads the humidity sensor circuit

How to Fix It

Unplug the refrigerator for 5 minutes and plug it back in. A power cycle can clear a temporary sensor fault caused by a voltage fluctuation or condensation event.

If Er HS appeared after a power outage or surge, a power cycle may clear it entirely. Allow 30 minutes after the restart for the error status to fully update on the display.
Check inside the refrigerator for signs of water accumulation near the crisper drawers or along the back wall. Excess moisture can reach sensor connectors and cause temporary faults.

Remove the crisper drawers and wipe out any pooled water. Check the drain opening at the back bottom of the refrigerator interior for blockage.
Look for the humidity sensor — it is usually mounted on the wall inside the fresh food compartment, often near the crisper drawer area. Check that it has not been knocked loose.

The sensor is a small component with a thin wire running to a connector. If it looks damaged or disconnected, do not attempt to repair it yourself — call a technician.
If Er HS persists after a power cycle and basic inspection, check your warranty status at lg.com/us/support. Enter your model number and serial number from the sticker inside the door.

LG's 1-year parts and labor warranty covers sensor failures. If the refrigerator is within warranty, LG will arrange a technician visit at no charge.
Schedule service if out of warranty. Provide the Er HS code and your model number when booking. A technician will test the sensor's resistance and replace it if it is out of specification.

Humidity sensors for LG refrigerators typically cost $20 to $50. The repair takes about 30 to 60 minutes. It is a relatively straightforward sensor swap.

When to Call a Professional

Er HS is a moderate repair that does not typically require emergency service. Your refrigerator will still cool normally — only the humidity management for the crisper section is affected. Humidity sensor replacement typically costs $80 to $180 including parts and labor. Contact LG support at 1-800-243-0000 to check warranty coverage. Schedule a service visit at your convenience — this is not an urgent repair.

Frequently Asked Questions

Will my food spoil with Er HS?

Your refrigerator will still cool normally with Er HS — only the humidity management is impaired. Your meat, dairy, and other refrigerated items will remain at safe temperatures. The crisper drawers may not maintain optimal humidity for produce, which can cause fruits and vegetables to wilt or dry out faster. Get the sensor repaired at your convenience, but this is not an emergency that requires immediate action.

What does a humidity sensor actually do in a refrigerator?

The humidity sensor measures how much moisture is in the air inside the fresh food compartment. LG's crisper system uses this data to keep high-humidity drawers moist for leafy vegetables. It also helps the refrigerator manage moisture to prevent condensation from building up inside the cabinet. Without the sensor, the refrigerator uses default settings that are less optimized for produce storage.

Can excess moisture in the refrigerator damage the sensor?

Yes — the humid environment inside a refrigerator can cause sensor connectors to corrode over time. Water from a spill, a blocked defrost drain, or excessive condensation can also reach the sensor directly. If your refrigerator has had issues with pooled water inside, cleaning the drain and drying the interior before replacing the sensor helps prevent the replacement part from failing early.