LG Dryer HS Error Code - Causes & Fix

LG Dryer HS Error Code — What It Means

HS is a humidity sensor error. The dryer uses metal moisture sensor bars near the lint filter to tell when clothes are dry, and HS means that sensor is reading wrong or has failed.

A common trigger is residue from dryer sheets coating the bars, which clean off easily, but a true sensor failure needs new parts.

Jump to Fix

Common Causes

• Residue on sensor bars Fabric softener and dryer sheet film coats the metal bars and blocks accurate readings.
• Failed moisture sensor The sensor bar or its holder goes bad and reports a false reading.
• Loose sensor wiring A corroded or unseated connector at the sensor breaks the signal to the board.
• Damaged sensor bar A bent or scratched bar loses good contact with the laundry.
• Faulty control board If the sensor and wiring test good, the board input may be the cause.

Step-by-Step Fix

1. Open the door and find the two metal sensor bars on the grille below the lint filter.
2. Clean the bars with a soft cloth and a little rubbing alcohol to remove film.
3. Let the bars dry fully before you start another cycle.
4. Run a test cycle to see if the cleaned bars clear the HS code.
5. Unplug and remove the grille to reach the sensor holder if the code stays.
6. Reseat or test the sensor wiring and replace the sensor bars if they read bad.
7. Reassemble and run a cycle to confirm HS is gone.

Parts Often Needed

When to Call a Pro

Cleaning and swapping the sensor bars is a doable home repair. If clean, good sensor bars still throw HS, the wiring or control board may be at fault, and an appliance pro can confirm that before you replace a costly board.