LG Dryer HS Error Code – What Part Fixes This Problem?
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Understanding the Problem
When an LG dryer displays the HS error code it is indicating a problem in the heating subsystem or temperature sensing circuit. Depending on the model, HS is a shorthand used by LG for a heat-sensor / heating system fault — the dryer may not heat, may take much longer to dry clothes, or may stop mid-cycle to prevent overheating. The code tells you the control detected a temperature-related safety or sensing issue and suspended normal operation. Multiple components can trigger the HS code: a failed thermistor (temperature sensor) returning out-of-range values, an open thermal cutout (thermal fuse/limit), a burned heating element or shorted heater circuit, clogged venting causing overheating, or a failing control board/relay that doesn’t drive the heater correctly. Start with the simplest checks (lint screen and exhaust) and then test sensors and fuses with a multimeter before replacing more costly parts.
Common Symptoms
HS error code displayed; dryer not heating or only barely warm; very long dry times; dryer may stop mid-cycle or trip thermal cutouts; sometimes occasional heating then loss of heat.
Common Causes
- Failed thermistor or temperature sensor giving out-of-range readings
- Blown thermal fuse or high-limit thermostat (open circuit)
- Faulty heating element or heater circuit (open or short) or failing control board/relay
- Restricted exhaust/venting causing overheating and sensor trips
Popular Parts That Fix This Problem
These are the most common replacement parts that fix this problem. When you're ready to order, click below to find the right part at PartsDiscount.com — just search by your appliance model number for a guaranteed fit.
Helpful Repair Tip
Enter the dryer’s diagnostic mode to confirm recent fault history, then check exhaust airflow and lint screen first. Use a multimeter to test continuity for the thermal fuse and heating element and measure the thermistor resistance; if any are open or out-of-spec, replace that part.
Frequently Asked Questions
Can I keep using the dryer when it shows HS?
No — HS indicates a temperature-sensing or heating-system fault. Running the dryer can be unsafe (risk of overheating) and can damage the unit. Stop using it until you diagnose and fix the root cause (venting problem, blown fuse, failed sensor, or heater fault).
Can I diagnose and replace the faulty parts myself?
Yes, basic checks (clean lint filter and exhaust), entering diagnostic mode, and testing continuity with a multimeter are DIY tasks if you have basic tools. Replacing thermistors, thermal fuses, and heating elements is often straightforward. Always unplug the dryer first and consult your model’s service manual or wiring diagram. If the problem is the control board or you’re uncomfortable with electrical testing, call a qualified technician.
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