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LG Refrigerator Error Code Er HS

Reviewed by the ApplianceErrors Editorial Team · Verified against manufacturer service documentation · Last verified: July 19, 2026
✓ Low Severity 🔧🔧 Moderate DIY Also shown as: HS

Humidity sensor error

The most common cause of the Er HS error on a LG refrigerator is humidity sensor failed (~60% of cases); start with: power cycle.

💰 DIY cost: $20–$55 👨‍🔧 Pro cost: $140–$280 Save $120+ by doing it yourself
LG Refrigerator error code Er HS on the display panel
How the Er HS code appears on a LG refrigerator display

What Does Error Code Er HS Mean on a LG Refrigerator?

Humidity sensor error.

Er HS fires when the control board reads the humidity sensor's signal as open, shorted, or outside its valid resistance/voltage range, so the board can no longer trust readings used to drive anti-condensation (mullion) heaters and damper airflow. It then falls back to default humidity logic. Unlike Er rS, which points to a temperature/thermistor sensor fault, Er HS is specific to the humidity-sensing input, most often a failed sensor or a loose or corroded connector rather than a compartment cooling problem.

Models affected: LG French-door and multi-door refrigerators equipped with a humidity sensor for anti-condensation heater and damper control; not all models carry this sensor
What owners report: Owners commonly report this code appearing alongside condensation or sweating around the door seams or mullion, and it sometimes clears on its own after a power cycle if the reading was a transient glitch. A quick reseat of the sensor connector reportedly resolves many cases before a sensor swap is needed.

What Causes Error Code Er HS?

Here are the most common causes in order of frequency. Start with the most likely cause before moving to the next:

  1. 1
    Humidity sensor failed 60% of cases
  2. 2
    Connector loose or corroded 25% of cases
  3. 3
    Harness damage 10% of cases
  4. 4
    Control board input fault 5% of cases

How to Fix LG Refrigerator Error Code Er HS

🔧🔧 Moderate DIY Est. time: 30–60 min
⚡ Safety first: Unplug the appliance before opening any panels or touching internal components.
  1. 1

    Power cycle

    Unplug for 5 minutes to clear a transient reading.

  2. 2

    Reseat the sensor connector

    Locate the humidity sensor (near the fresh-food section/control housing) and reseat its connector.

    ⚠️ Unplug before accessing interior wiring.
  3. 3

    Replace the humidity sensor

    If reseating doesn't help, replace the sensor.

    🔩 LG refrigerator humidity sensor ($20–$55)

How to Reset Error Code Er HS

Unplug for 5 minutes. If Er HS returns, reseat then replace the humidity sensor.

Note: If the error returns after resetting, the underlying issue has not been resolved. Work through the fix steps above.

Full LG refrigerator reset guide → Enter diagnostic mode →

Did this guide fix your appliance?

When to Call a Professional

If a new humidity sensor doesn't clear Er HS, the control board's sensor circuit has failed.

Average professional repair cost for this issue: $140–$280

Related Error Codes

Er rS
Refrigerator (fresh-food) compartment sensor error
⚠ Medium Severity

Find Replacement Parts

Use these links to find the exact replacement parts for your LG Refrigerator:

🔩
Search PartSelect
LG Refrigerator repair parts
🔧
Search RepairClinic
Step-by-step video guides

External links — ApplianceErrors.com is not affiliated with these retailers.

More LG Refrigerator Error Codes

Er FF Freezer fan error — fan motor not operating Er dH Defrost heater error — defrost cycle not completing Er CF Condenser fan motor error Er FS Freezer temperature sensor error Er IS Ice maker sensor failure Er IF Ice maker fan error

Frequently Asked Questions

Can I keep using my LG Refrigerator when error Er HS appears? +
Usually yes — Er HS is a low-severity sensor notice that rarely stops the refrigerator from working, but clearing the underlying cause prevents it from escalating.
What most commonly causes Er HS on a LG Refrigerator? +
Across reported LG refrigerator repairs, the most frequent is humidity sensor failed (60% of cases), connector loose or corroded (25%), then harness damage (10%). Check them in that order before replacing any parts.
Er HS keeps coming back after a reset — what should I check next? +
A reset only clears the stored Er HS fault; if it returns, the sensor problem is still present. Move on to the physical checks — power cycle, then reseat the sensor connector — since the code will reappear until the root cause is resolved. This is a moderate job — a multimeter and some disassembly are usually involved.
How much does it cost to fix LG Refrigerator error Er HS? +
A DIY repair typically runs $20–$55 in parts, versus $140–$280 for a professional service call, so handling it yourself saves around $120. Expect the work to take roughly 30–60 minutes.
Which LG Refrigerator models show error Er HS? +
Er HS is documented on LG French-door and multi-door refrigerators equipped with a humidity sensor for anti-condensation heater and damper control; not all models carry this sensor. Other units sharing the same control platform can display it too, so the fixes here generally transfer across the series.

Sources & References

Content verified against manufacturer service documentation. Last verified: July 19, 2026.

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