HE
LG Dryer
Severity: ModerateWhat Does This Error Mean?
The HE error on an LG dryer stands for Heating Error. It means the dryer is not reaching the right temperature — or is overheating beyond a safe level. This usually points to a blocked exhaust vent, a failed heating element, or a blown thermal fuse.
Affected Models
- DLEX3900W
- DLE7300WE
- DLEX5000V
- DLEX4000W
- DLE3500W
- Most LG electric dryer models
Common Causes
- The exhaust vent hose is clogged with lint, blocking hot air from escaping
- The heating element has burned out and the dryer cannot generate heat at all
- The thermal fuse has blown due to overheating, cutting power to the heater
- The thermistor (temperature sensor) is giving incorrect temperature readings
- The vent flap on the outside of your home is stuck closed and trapping heat inside
How to Fix It
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Unplug the dryer and disconnect the exhaust vent hose from the back.
Shake the hose out and use a dryer vent brush to clear lint from inside the hose and the wall duct.
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Go outside your home and locate the vent flap where the dryer exhausts to outdoors.
Make sure the flap opens and closes freely and is not blocked by debris or a bird nest.
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Clean the lint filter inside the dryer door — it should be cleaned after every single load.
A clogged lint filter is one of the leading causes of dryer overheating and HE errors.
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Reconnect the vent hose, plug the dryer back in, and run a short test cycle.
Listen for the heating element engaging — you should feel warm air at the exhaust vent outside.
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If the HE error returns and the dryer is not heating, stop using it and call a technician.
The thermal fuse or heating element will need to be tested and replaced if faulty.
When to Call a Professional
If cleaning the vent and resetting the dryer does not clear the HE error, call a technician. The heating element, thermal fuse, or thermistor will need testing and likely replacement. Do not continue using the dryer if it is overheating — this is a fire risk. Typical repair costs are $100–$220 depending on which part has failed.
Frequently Asked Questions
How do I know if my LG dryer's thermal fuse is blown?
A blown thermal fuse means the dryer will run but produce no heat at all. The only way to confirm is to test it with a multimeter — a working fuse shows continuity. A blown fuse shows no continuity and must be replaced. Thermal fuses are inexpensive parts (usually $5–$20) but the dryer must be disassembled to access them.
How often should I clean my LG dryer vent?
The lint filter inside the door should be cleaned after every single load. The exhaust vent hose and wall duct should be cleaned at least once a year. If you dry a lot of laundry or have a long vent run, clean it every 6 months. A clogged vent is not just an error code cause — it is a serious fire hazard.
Can the HE error on an LG dryer mean it is overheating rather than not heating?
Yes — HE can indicate either problem. If the dryer is getting too hot (clothes are scorching or the exterior is burning hot to the touch), the thermistor or cycling thermostat may be failing. If the dryer is not heating at all, the thermal fuse or heating element is more likely to blame. A technician can run diagnostics to determine which direction the fault is.