Error code reference
LG Dishwasher Error Code HE-1
Heater malfunction
Heater malfunction: temperature change is equal to or less than 2°F for 20 minutes during heating operation after retry.
First step from the service manual
Check the connections of the Heater connectors.
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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