Error code reference

LG Washer Error Code HE1

Heater error

Heater error – Water level sensor operates without water (frozen or other reason) and bottom temperature sensor detects overheating temperature, causing washing machine to turn input power off. For USA products, may occur due to PBA relay malfunction if heater has no error.

First step from the service manual

Check for frozen water conditions and verify temperature sensor and PBA relay operation.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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  • 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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