LG Washer tE Error: Causes and Solutions
When the letters “tE” appear on the display panel of an LG washer, the machine is reporting a heating error. The LG washer tE error indicates that the washer’s temperature sensing circuit has a problem. Specifically, the thermistor (temperature sensor) is sending out-of-range readings to the control board, or the heater circuit is open. The washer stops the cycle to prevent overheating or washing at the wrong temperature.
The LG washer tE error is one of the most significant error codes reported by LG washer owners, because it can prevent the machine from heating water at all. If you touch the door during a tE error, you will find it cold, even if you selected a hot water wash cycle. This means the wash cycle is not heating water as it should. The LG washer tE error is not a random glitch; it has specific, identifiable causes and a clear set of troubleshooting steps recommended by LG.
This article explains exactly what the LG washer tE error means, what conditions trigger it, and the step-by-step procedures to clear it. It covers the sub-codes associated with tE, the components involved in the heating circuit, and the circumstances in which professional service is required. All information presented here is drawn from LG’s official support documentation and verified troubleshooting sources.
?What Does the LG Washer tE Error Mean
The LG washer tE error indicates a heating error. According to LG’s official support documentation for Canada, the “tE” error code on the display indicates a heating error. LG’s Russian support magazine explains that the error tE, translated from English as “temperature error,” means that a failure in water heating has occurred.
The error is triggered when the washing machine cannot heat water to the programmed temperature. This happens because the thermistor, which measures water temperature, is sending abnormal readings, or because the heater element that warms the water has failed. The washer detects that it cannot achieve or maintain the correct temperature and stops the cycle to prevent potential damage.
The LG washer tE error is not an indication that the entire washing machine has failed. It is a targeted alert that the heating circuit — the system responsible for warming the water — is not functioning correctly. Other functions of the washer, such as filling, draining, and spinning, may still operate normally, but the cycle cannot complete because the water temperature requirement cannot be met.
Understanding the Sub-Codes: tE1, tE2, tE3, and tE4
The LG washer tE error can appear with specific sub-codes that indicate which component in the heating circuit has failed. These sub-codes help narrow down the diagnosis and determine the appropriate repair.
tE1: Thermistor Reading Error
Sub-code tE1 indicates a thermistor reading error. This means the thermistor — the small resistive sensor that measures water temperature — is sending fixed or erratic readings to the control board. The thermistor is clipped to the outer tub or mounted in the sump and changes resistance based on water temperature. A burned-out or shorted thermistor sends incorrect readings, triggering the tE1 sub-code.
tE2: Heater Circuit Failure
Sub-code tE2 indicates a heater circuit failure. This sub-code appears when the heater element has burned out and the heater circuit is open. Some LG front-load models have an internal heater that warms the water during specific cycles. If this heater burns out, the tE2 sub-code appears because the heater circuit is open and cannot conduct current.
tE3: Sensor Communication Error
Sub-code tE3 indicates a sensor communication error. This means the control board cannot properly communicate with the thermistor. The sensor may be functional, but the signal path between the sensor and the main control board is disrupted. This can be caused by damaged wiring, corroded connectors, or a failure in the control board’s input circuit.
tE4: Secondary Thermistor Issue
Sub-code tE4 relates to a secondary thermistor. Some LG washer models are equipped with more than one temperature sensor for redundancy or for monitoring different parts of the heating system. The tE4 sub-code indicates that the secondary thermistor is sending faulty readings or has failed.
Common Causes of the LG Washer tE Error
The LG washer tE error can be triggered by several different conditions. Understanding these causes is the first step toward resolving the issue and preventing its recurrence.
Failed Thermistor (NTC Sensor)
The thermistor is a small resistive sensor clipped to the outer tub or mounted in the sump. It changes resistance based on water temperature. A burned-out or shorted thermistor sends fixed or erratic readings to the control board, triggering the LG washer tE error. The thermistor is the component most directly associated with the tE error, and it is the first component to test when diagnosing the issue.
Broken Wiring to the Thermistor
The thin wires running from the thermistor to the main control board can become damaged, pinched, or have corroded connectors. Vibration during spin cycles is the usual cause of this type of damage. If the wiring is compromised, the control board cannot receive accurate temperature readings from the thermistor, even if the sensor itself is functioning correctly. LG’s Korean support documentation confirms that the tE error can appear when the connector is disconnected or the cable is broken.
Failed Water Heater Element
Some LG front-load models have an internal heater that warms the water during sanitary, allergen, or other hot water cycles. If the heater burns out, the tE2 sub-code appears because the heater circuit is open. The heating element can fail due to scale buildup from hard water, which causes the element to overheat and eventually stop heating altogether.
Main Control Board Failure
The input circuit on the control board that reads the thermistor signal can become damaged. In this case, the sensor itself is fine, but the board cannot process the reading. This is a less common cause of the LG washer tE error, but it must be considered when the thermistor and wiring test within specifications but the error persists.
Temporary Software Glitch
A momentary glitch in the sensor circuit can sometimes cause a false tE code. This is why LG’s first troubleshooting recommendation is to reset the washer by unplugging it, waiting, and plugging it back in. If the code returns after the reset, the issue is a genuine component failure rather than a temporary glitch.
Step-by-Step Troubleshooting for the LG Washer tE Error
The following steps provide a systematic approach to addressing the LG washer tE error. Performing these steps in order helps identify and resolve the underlying cause.
Step 1: Reset the Washer
LG’s official troubleshooting guidance for the tE error is straightforward: unplug your washer from the outlet for 10 seconds, plug the unit back in, and press the POWER button. Then press the SPIN SPEED button until ‘NO SPIN’ is selected and press START. Once the washer has drained, attempt to run a new cycle.
LG’s Russian support documentation provides a slightly longer reset period: turn off the washing machine and disconnect it from the power source for 15-20 minutes. After this, turn it on and start the wash again. If the display shows the tE error again, the problem is a failure of an internal component. Other sources recommend unplugging the machine for at least 5 minutes to clear the active code from the display.
Step 2: Check Water Temperature Supply
Verify that the hot and cold water supply to the washing machine is functioning correctly. Inaccurate water temperatures can affect the readings of the thermistor. Adjust the water heater settings if necessary. If the hot water supply is insufficient or inconsistent, the thermistor may register abnormal readings that trigger the LG washer tE error.
Step 3: Locate and Inspect the Thermistor
Unplug the washer. On front-load models, remove the rear panel. The thermistor is a small cylindrical sensor with two wires, usually clipped to the outer tub near the sump or heater. On top-load models, the sensor sits inside the outer tub and is accessed from underneath. Examine the thermistor for any visible damage, loose connections, or debris. Clean the sensor and its surroundings to ensure accurate temperature readings.
Step 4: Test the Thermistor with a Multimeter
Disconnect the thermistor’s two-pin connector. Set your multimeter to ohms (20K range). At room temperature (roughly 77 degrees Fahrenheit), the thermistor should read approximately 10,000 to 13,000 ohms. A reading of 0 ohms means it is shorted. An open reading (OL) means it is burned out. Either condition requires replacement.
Step 5: Inspect the Wiring
Trace the two wires from the thermistor connector back to the main control board. Look for cracked insulation, pinched wires near sharp edges, or corroded pins in the connector. Repair damaged wires with heat-shrink solder connectors. LG’s Korean support documentation confirms that the tE error can appear when the connector is disconnected or the cable is broken, so this inspection is essential.
Step 6: Test the Heater Element (If tE2)
If the tE2 sub-code appears, locate the tubular heater element on the bottom of the outer tub. Disconnect its two-wire connector. Measure resistance with a multimeter. A working heater reads between 10 and 30 ohms. An open reading means the element is burned out, and the heater assembly should be replaced.
Step 7: Run a Diagnostic Test
Some LG washing machines have a diagnostic mode that allows users to test individual components. Refer to the user manual for instructions on running a diagnostic test to assess the thermistor’s functionality. This can confirm whether the thermistor is operating within specifications or whether it requires replacement.
Quick Reference Table
| Situation | What It Means | What To Do |
|---|---|---|
| tE appears on the display | Heating error detected | Unplug the washer for 10 seconds to 15 minutes, then restart |
| tE1 sub-code | Thermistor reading error | Test the thermistor with a multimeter |
| tE2 sub-code | Heater circuit failure | Test the heater element for continuity |
| tE3 sub-code | Sensor communication error | Inspect wiring and connectors |
| tE4 sub-code | Secondary thermistor issue | Check the secondary sensor |
| Thermistor reads 0 ohms | Thermistor is shorted | Replace the thermistor |
| Thermistor reads OL | Thermistor is burned out | Replace the thermistor |
| Heater reads OL | Heater element is burned out | Replace the heater assembly |
| tE persists after reset | Component failure confirmed | Service is required |
Frequently Asked Questions
?What does the LG washer tE error mean
The tE error indicates a heating error. The thermistor (temperature sensor) is sending out-of-range readings to the control board, or the heater circuit is open. The washer stops the cycle to prevent overheating or washing at the wrong temperature.
?Is the LG washer tE error a product defect
The tE error is not a product defect in the sense of a manufacturing flaw. It is an alert that a component in the heating circuit — the thermistor, the wiring, the heater element, or the control board — has failed or is malfunctioning.
?What are the tE sub-codes
The sub-codes indicate specific faults: tE1 is a thermistor reading error, tE2 is a heater circuit failure, tE3 is a sensor communication error, and tE4 relates to a secondary thermistor.
?Can I fix the LG washer tE error myself
In some cases, yes. You can reset the washer, check the water supply temperature, locate and inspect the thermistor, test it with a multimeter, and inspect the wiring. However, if the thermistor reads out of specification, the heater element is open, or you are not comfortable working with electrical components, professional repair is recommended.
?How do I reset the LG washer after a tE error
Unplug your washer from the outlet for 10 seconds, plug it back in, and press the POWER button. Press the SPIN SPEED button until ‘NO SPIN’ is selected and press START. Once the washer has drained, attempt to run a new cycle. For a longer reset, disconnect the power for 15-20 minutes.
?What should the thermistor read when tested
At room temperature (roughly 77 degrees Fahrenheit), the thermistor should read approximately 10,000 to 13,000 ohms. A reading of 0 ohms means it is shorted. An open reading (OL) means it is burned out.
?Why does the tE error appear during a hot water cycle
The tE error appears when the washer cannot heat water to the programmed temperature. This can be caused by a failed thermistor, a burned-out heater element, damaged wiring, or a control board failure.
?What should I do if the tE error keeps appearing after a reset
If the error persists after resetting the washer, an inspection by a service manager is necessary. The issue is a genuine component failure that requires professional diagnosis and repair.
When the LG Washer tE Error Requires Service
The troubleshooting steps described above address the most common causes of the LG washer tE error. However, there are circumstances in which professional service is required.
LG’s official documentation states clearly that if the error code persists on appearing in the control panel display window after executing troubleshooting steps, a Repair Service will be required to resolve the issue. LG’s Russian support documentation explains that to diagnose and repair the problem, it is best to contact an LG service center, as special equipment and partial disassembly of the washing machine are required.
LG’s Korean support documentation is even more direct: the tE error requires inspection by a professional service manager. This is because the heating circuit involves electrical components, and diagnosing the exact point of failure requires testing the thermistor, the wiring, the heater element, and the control board in sequence.
A service technician may need to check or replace the following parts: the thermistor (temperature sensor), the heater element, the main control board, and the wiring harness between the thermistor and the control board. If the thermistor reads out of spec, the heater element is open, or the control board cannot process the sensor reading, replacement of the faulty component is necessary.
It is important not to continue running cycles repeatedly when the LG washer tE error persists. Continued operation with a heating circuit failure can lead to incomplete washing, poor cleaning results, and potential damage to other components in the heating circuit. Addressing the issue promptly protects both the appliance and your laundry.
Preventing the LG Washer tE Error
While the LG washer tE error cannot always be prevented, certain habits reduce the likelihood of its occurrence. Regular cleaning of the washing machine to remove scale buildup helps protect the heater element from overheating and failure. Hard water contains calcium that forms scale on the heating element, causing it to overheat and eventually stop heating altogether.
Periodically checking the thermistor and its wiring for damage, corrosion, or loose connections helps identify potential problems before they trigger the tE error. Ensuring that the water supply to the washer is consistent and that both hot and cold water lines are functioning properly helps maintain accurate temperature readings.
Running a Tub Clean cycle as part of routine maintenance helps keep the internal components, including the heating circuit, free of buildup that might contribute to temperature sensing problems. By following these preventive practices, you can reduce the chance of encountering the LG washer tE error and help ensure that your washing machine heats water properly cycle after cycle.
