Thermistor error — dryer temperature sensor malfunction detected during operation
The tE error on the LG DLEX3700V indicates thermistor error — dryer temperature sensor malfunction detected during operation. This typically occurs due to faulty thermistor with resistance outside normal operating range. A qualified technician can usually diagnose this in 10–15 min (diagnosis only), but the steps below will help you understand the issue.
Safety Warning
This is a high-severity error. Unplug the appliance immediately and assess the situation before attempting any repair.
Safety Warning
This repair is recommended for certified technicians only. The diagnostic steps below can help you understand the issue before calling for service.
Common Causes of tE
- 1Faulty thermistor with resistance outside normal operating range
- 2Loose or corroded wiring connector at the thermistor
- 3Overheating event that damaged the thermistor
- 4Control board temperature measurement circuit failure
How to Fix tE
- 1
Step 1
Stop the dryer and unplug it from the wall
- 2
Step 2
Leave the dryer unplugged for 10 minutes to allow internal temperatures to stabilize
- 3
Step 3
Check that the dryer vent is fully clear — a blocked vent can cause the thermistor to read extreme temperatures
- 4
Step 4
Plug the dryer back in and run a short timed cycle to test whether the error recurs
- 5
Step 5
If the error returns consistently, call a technician to test the thermistor with a multimeter and replace it if faulty
Tools Needed
When to Call a Technician
Error returns after power reset and duct is confirmed clear — the thermistor or control board circuit needs professional replacement
Frequently Asked Questions
Common questions about LG tE error
The tE error on the LG DLEX3700V means the dryer's temperature sensor, called a thermistor, is not functioning correctly. The thermistor prevents the dryer from overheating by monitoring air temperature. When it fails, the control board cannot regulate heat safely and stops the dryer to prevent damage.
Not directly, because the dryer stops itself when it cannot measure temperature correctly. However, you should not operate the dryer with a faulty thermistor, as the safety cutoff relies on accurate temperature data. Have the thermistor tested and replaced by a qualified technician before resuming normal use.
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