Error code reference

LG Dishwasher Error Code HE

Thermal error - the resistance of thermistor is not outputting normally, or inlet water temperature is very high (over 194°F).

SourceLG LDF9810 Dishwasher - Full Service Manualp. 23

LG codes LG dishwasher codes

Diagnostic procedure

The full HE procedure

Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.

MyPros+ · DiagnosticsStep 1 preview

First diagnostic step

Check the temperature via Test Mode; if temperature is displayed, adjust inlet water temperature to 120°F; if not displayed, check wiring connection and check electric resistance of thermistor (11-14k ohms at 77°F); replace the PCB if necessary.

SourceLG LDF9810 Dishwasher - Full Service Manualp. 23

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More steps, wiring diagram references, and verified part numbers

Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.

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Where this code is documented

76 manuals in the MyPros+ library document this code for LG dishwasher.

Models covered by the manuals that document this code

More models are covered than are listed here.

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The full HE procedure

Where this code is documented

Models covered by the manuals that document this code

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