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Error code reference

LG Dryer Error Code HS

Displayed when the thermistor temperature has increased about 17 degrees for 10 seconds.

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What the HS error code actually means

Your LG dryer has detected a problem with the humidity sensor, which is the part that checks how wet your clothes are during a cycle. This sensor helps the dryer know when your laundry is actually dry so it can stop automatically, but right now it is sending a signal the dryer cannot read or no signal at all. The dryer has paused to prevent any damage, and the sensor or its wiring will need to be inspected before normal drying can resume.

Diagnostic procedure

The full HS procedure

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Thermistor should be replaced.
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Most common causes of HS

Ranked by how often they cause this code
  1. 1Failed humidity sensor
  2. 2Damaged or disconnected wiring harness to humidity sensor
  3. 3Corroded or dirty sensor contacts
  4. 4Faulty main control board

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Questions people ask about HS

What does the HS error code mean on an LG dryer?
HS on an LG dryer means the control board has detected a humidity sensor failure. The humidity sensor monitors moisture levels in the drum to regulate drying time, and HS appears when the sensor signal is missing or outside the expected range. The dryer stops the cycle to prevent inaccurate drying caused by a faulty sensor reading.
How do I fix the HS error code on my LG dryer?
Start by turning off the dryer and unplugging it. Check the humidity sensor contacts inside the drum near the lint filter area for visible lint buildup or residue, and clean them with a soft cloth. If the code returns after cleaning and restarting, the sensor, wiring harness, or control board will need to be tested and likely replaced. This repair typically requires a technician with access to a multimeter to test circuit continuity.
Will resetting my LG dryer clear the HS code?
A basic reset, by unplugging the dryer for a few minutes and restarting, may temporarily clear the display, but HS will return if the underlying humidity sensor fault is still present. This code reflects a hardware failure that the control board actively detects, so clearing it without fixing the sensor, wiring, or board is only a temporary measure. A technician should inspect the sensor circuit to confirm the root cause.
Can I still use my LG dryer when it shows the HS code?
LG advises turning off the dryer and calling for service when HS appears, so continuing to use it is not recommended. Without a functioning humidity sensor, the dryer cannot accurately detect when clothes are dry, which can lead to over-drying, damage to fabrics, or inefficient cycles. Stop using the dryer until the sensor or related wiring is inspected and repaired.
How much does it cost to fix an HS error on an LG dryer?
A humidity sensor replacement typically costs between $20 and $60 for the part itself. If you factor in a service call and labor, total repair costs commonly fall in the $100 to $200 range depending on your location and the technician's rates. If the control board is the cause, parts alone can run $150 to $300, making professional diagnosis important before ordering components.

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