LG dryer HS: humidity-sensor error
LG says HS indicates a humidity-sensor problem and recommends cleaning the accessible sensor surfaces below the lint filter.
What this guide covers
Error codes: HS
This guide follows a structured decision tree built from manufacturer troubleshooting information. It does not assume that the most commonly replaced part is the failed part, and it does not show an exact-fit replacement part unless model compatibility has been independently verified.
Continue this exact diagnostic
Safe troubleshooting sequence
This reviewed path begins with a direct owner-safe action or status check rather than a branching question. Follow the step below, then use the interactive diagnostic if the condition persists.
- Power the dryer off and let it coolLocate the accessible sensor bars below the lint filter using the manual.
- Wipe the sensor surfaces with a damp cloth or paper towel, then let them dry fullyDo not abrade or remove the sensor.
- Retry a cycle onceIf HS returns, continue.
Reviewed outcomes
Clean the accessible humidity sensors
Residue on the sensor bars can interfere with moisture sensing.
Evidence strength: Strong
HS returned after the sensor was cleaned
A persistent humidity-sensor fault needs diagnosis.
Evidence strength: Strong
When professional diagnosis is the safer next step
A persistent humidity-sensor fault needs diagnosis.
Appliance Verdict stops before energized electrical testing, gas-system work, sealed-system work, and other checks that can create unnecessary risk. A technician can use the model, issue, and completed checks from the interactive diagnostic as a starting point.
Repair or replace?
A diagnosis and a repair decision are different questions. Once you have a real repair quote, compare the total repair cost with the all-in price of a comparable replacement. Warranty or protection-plan coverage, appliance age, reliability history, efficiency, and likely future repairs can all matter. Appliance Verdict’s interactive result includes a transparent cost comparison rather than a black-box replacement recommendation.
Manufacturer sources
Dataset reviewed through 2026-09-11. Appliance Verdict is independent and is not endorsed by the manufacturers cited. Always follow the exact owner or service documentation for your model.
Browse reviewed dryer error codes →
Browse all LG troubleshooting guides →