Error code reference
LG Dishwasher Error Code HE
Heater error
Heater error - water is not heated or tub temperature is overheated above 194°F, possibly caused by wiring issues, high inlet water temperature, damaged thermistor, defective heater, damaged controller, or faulty relay circuit.
First step from the service manual
Check and reconnect the wire; verify inlet water temperature.
The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.
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Get the full diagnostic procedure for HE.
- Step-by-step tests with expected resistance, voltage, and continuity values
- Wiring diagram references and connector pinouts from the OEM service manual
- Verified part numbers when replacement is required
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