LG Dryer HS Error Code – What It Means and How to Fix It
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Understanding the Problem
When an LG dryer displays the HS error code it indicates a fault detected in the dryer’s sensing/heating circuit. On many LG sensor-dry models HS (or hS) is thrown when the dryer’s moisture/humidity sensing circuit is not reading correctly or when the heating system is behaving abnormally. The machine prevents normal operation until the fault is resolved to avoid poor drying performance or overheating. The HS code can be caused by several things: a contaminated or disconnected moisture sensor, open or shorted wiring/connector in the sensor or heater circuits, a failed thermal fuse or thermostat, or a failed heating element or control board. Start with simple, non-invasive checks (power reset, clean sensor bars, inspect venting) and then move to component testing with a multimeter if needed. Always disconnect power before working inside the dryer and follow safety precautions when testing heating components.
Common Symptoms
HS (or hS) error code on the display; dryer may stop mid-cycle, not heat properly, take unusually long to dry, or display intermittent errors; sometimes accompanied by other error codes or no heat.
Common Causes
- Dirty, damaged, or disconnected moisture/humidity sensor (sensor-dry models)
- Open or shorted wiring/connectors in sensor or heater circuits (wiring harness damage)
- Failed thermal fuse, high-limit thermostat, or heating element
- Faulty main control board or relay controlling the heater
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Helpful Repair Tip
First clean the moisture sensor bars with a cloth and rubbing alcohol and run a test cycle. If the HS error persists, disconnect power and check continuity of the thermal fuse and moisture sensor wiring with a multimeter—these are the most common quick checks.
Frequently Asked Questions
What does HS mean on my LG dryer?
HS (or hS) generally indicates a problem with the moisture-sensing circuit or heating system on LG sensor-dry dryers. It means the dryer detected an abnormal signal (open/short/incorrect reading) and stopped normal operation. Start by cleaning the moisture sensor bars and checking the venting; if the error remains, inspect wiring and test thermal fuse/heater components.
Can I keep using the dryer when HS appears?
It's not recommended to continue using the dryer when the HS code appears. The code can indicate sensor or heating faults which may cause poor drying, longer cycles, or, in rare cases, unsafe conditions. Perform the basic troubleshooting steps (clean sensor, check venting) and if the error persists, power off the appliance and have the heating circuit and sensors tested or replaced.
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