ErrorCodeDoctor
LG · Dryer

LG Dryer HS error code

Difficulty: Easy · Cost: $0–$80 · Duration: 5–10m

The HS error means your LG dryer detected a problem with the humidity sensor — the component that measures how much moisture is left in the laundry to determine when the cycle should end. When this sensor malfunctions the dryer cannot detect dryness accurately and will run for a full 2.5 hours as a fallback, which may make it seem like the dryer is not drying properly. The most common cause is a film of residue coating the sensor bars. Cleaning the sensors usually resolves the error without needing a technician.

Common causes

  • Humidity sensor bars are coated with dryer sheet residue, fabric softener, or lint buildup
  • Sensor bars are wet or damp preventing an accurate moisture reading
  • Humidity sensor has malfunctioned or failed

How to fix it

  1. 1

    Locate the humidity sensor bars inside the dryer drum — they are located below the lint filter on the front inner wall

  2. 2

    Wipe the sensor bars clean with a soft cloth lightly dampened with rubbing alcohol to remove any residue

  3. 3

    Allow the sensor bars to dry completely before running another cycle

  4. 4

    Restart the dryer and check if the HS error has cleared

  5. 5

    If HS persists after cleaning the sensors the humidity sensor will need inspection and replacement by a technician

Related LG Dryer error codes

1

d75

The exhaust airflow is 75% restricted — the vent system needs cleaning

easy
2

d80

The exhaust airflow is 80% restricted — the vent system needs cleaning or inspection

medium
3

d90

The exhaust airflow is 90% restricted — urgent cleaning required

medium
4

d95

The exhaust airflow is 95% restricted — stop using the dryer immediately

hard

HS error — frequently asked questions

What does the HS error mean on a LG dryer?

The humidity sensor detected a fault and cannot measure moisture correctly

What causes the HS error?

The HS error is usually caused by: Humidity sensor bars are coated with dryer sheet residue, fabric softener, or lint buildup; Sensor bars are wet or damp preventing an accurate moisture reading; Humidity sensor has malfunctioned or failed.

Can I fix the HS error myself?

Yes — this is rated an easy fix that most people can do themselves, typically in 5–10m.

How much does it cost to fix the HS error?

Fixing the HS error on a LG dryer typically costs $0–$80, depending on parts and whether you do it yourself or hire a technician.

Is it safe to keep using my dryer with the HS error?

In most cases yes, but it's best to address the HS error soon — see the fix steps below to resolve it.