SE
LG Dryer
Severity: ModerateWhat Does This Error Mean?
The SE error on an LG dryer means the drum motor speed sensor has detected a problem. The sensor monitors how fast the drum is spinning during a cycle. When it sends an abnormal reading — or no reading at all — the dryer stops and shows SE.
Affected Models
- DLEX5000V
- DLE7300WE
- DLHC1455V
- DLEX4000W
- Most LG electric and gas dryer models
Common Causes
- The drum motor speed sensor (tachometer) has failed and is sending a bad signal
- Wiring between the speed sensor and the main control board is loose or damaged
- The drum motor itself is failing and running at an inconsistent speed
- A foreign object inside the drum is causing the drum to spin unevenly
- The main control board has a fault and is misreading the sensor signal
How to Fix It
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Open the dryer door and check inside the drum for any loose items like coins, screws, or small toys.
Even a small object bouncing around can cause irregular drum movement and trigger the SE error.
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Unplug the dryer from the wall outlet and wait 10 minutes.
A hard reset sometimes clears a temporary sensor glitch.
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Plug the dryer back in and try running a short timed dry cycle.
Listen for any grinding, squealing, or unusual sounds as the drum starts spinning.
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If the drum feels stiff or hard to turn by hand, there may be a belt or bearing issue.
Open the door and try rotating the drum manually — it should spin freely with light resistance.
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If the SE error returns immediately or the drum will not spin, stop using the dryer and call a technician.
Continuing to run the dryer with a motor problem risks further damage.
When to Call a Professional
The SE error usually requires a technician to diagnose and repair. The speed sensor, motor wiring, or control board will need testing with a multimeter to find the fault. Attempting to access the motor area without appliance repair experience is not recommended. Repair costs typically range from $130–$300 depending on which part is faulty.
Frequently Asked Questions
Can I still use my LG dryer with the SE error?
It is best not to — the SE error means the dryer cannot confirm the drum is spinning correctly. Running it anyway risks overheating or damaging the motor further. Wait until the error is resolved before doing more laundry.
Is the SE error expensive to repair on an LG dryer?
It depends on the cause. If it is just a loose wiring connector, a technician visit may cost $80–$120 for the diagnosis and fix. If the speed sensor or motor needs replacing, expect $150–$300 total. The motor itself is the most expensive part at $80–$180.
How does LG's speed sensor work in a dryer?
The speed sensor — also called a tachometer — is attached to the drum motor. As the motor spins, the sensor counts rotations and sends that data to the control board. The board uses that data to confirm the drum is running at the correct speed. If the count is too slow, too fast, or missing entirely, it triggers the SE error.