LG Range HE Error Code — What It Means
The HE error code on an LG range indicates a temporary heater error, according to LG’s official support documentation. This fault is specific to LG combo units and range models, and it signals that the appliance has detected a problem with the heating system during operation. LG advises users to power down the unit and unplug it to reset the fault.
If the code reappears after a power reset, the problem is not temporary and the unit requires service. The underlying cause is typically related to a heating element or burner fault, an oven sensor or thermistor failure, wiring or connection issues, or in some cases improper supply voltage to the appliance.
Common Causes
- Faulty heating element or burner A damaged or burned-out heating element in the oven can trigger the HE error when the control board cannot regulate temperature properly.
- Defective oven sensor or thermistor The oven temperature sensor monitors heat levels, and a failed or drift-prone sensor will cause the control to report a heater fault.
- Loose or corroded wiring connections Wiring harnesses to the heating element or sensor can become loose, oxidized, or damaged, interrupting the heating circuit and generating the error.
- Improper electrical supply voltage An LG range requires correct line voltage, and low or fluctuating power from the outlet or circuit breaker can mimic a heater failure.
- Control board or relay fault In some cases the PCB or a relay responsible for switching the heater can fail, preventing normal operation and triggering the code.
Step-by-Step Fix
- Power off and unplug the range for at least 60 seconds to reset the control board, then restore power and test whether the error clears.
- Verify the electrical supply by checking the circuit breaker and confirming the outlet delivers the correct voltage for your model (consult your installation manual for spec).
- Inspect the heating element or burner visually for cracks, blistering, or burn marks, and use a multimeter to test continuity across the element terminals (consult your model’s wiring diagram for expected values).
- Test the oven sensor or thermistor by disconnecting it and measuring resistance at room temperature, then compare the reading to your service manual’s resistance table.
- Examine all wiring and connectors between the sensor, heating element, and control board for loose pins, corrosion, or frayed insulation, and repair or replace damaged harnesses.
- Replace the failed component (element, sensor, or harness) once testing identifies the fault, ensuring all connections are secure before reassembling panels.
- Contact LG service or a qualified technician if the error persists after component replacement, as the control board may require professional diagnostics or replacement.
Parts Often Needed
| Part | Notes |
|---|---|
| LG Range Heating Element | Amazon | Match the wattage and physical dimensions to your model number. |
| LG Oven Temperature Sensor (Thermistor) | Amazon | Verify the connector type and sensor length for your range model. |
| Wiring Harness or Terminal Block | Amazon | Use OEM or compatible harness if connectors are melted or corroded. |
When to Call a Pro
Call a professional if the HE error returns after a power reset and you are not comfortable working with live electrical circuits or high-voltage heating elements. A licensed appliance technician has the test equipment and LG service documentation to safely diagnose control board faults, measure voltage at the heating element under load, and verify thermistor calibration. Professional service is also recommended if you have replaced both the element and sensor but the code persists, since internal control board relay or firmware issues may be present.