LG dishwasher error code
HE
Water heating error
The dishwasher could not heat the water, or the water got hotter than about 149°F.
Try these free fixes first
Unplug the dishwasher before opening any panel.
- Turn the dishwasher off.
- Switch off its circuit breaker for at least 10 seconds, then turn it back on.
- Run the kitchen tap until it runs hot before starting a cycle.
- Start a new cycle to see if the code clears.
Still showing HE?
Call a technician if the code returns, since the heater or its control circuit is usually at fault.
Heater assemblyCheck that the part matches your exact model number (usually on a sticker inside the door or on the back).Find the part
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Questions people ask
What does HE mean on a LG dishwasher?
HE on a LG dishwasher means: water heating error. The dishwasher could not heat the water, or the water got hotter than about 149°F.
How do I fix LG dishwasher error HE?
Turn the dishwasher off. Switch off its circuit breaker for at least 10 seconds, then turn it back on. Run the kitchen tap until it runs hot before starting a cycle. Start a new cycle to see if the code clears.
When should I call a repair technician?
Call a technician if the code returns, since the heater or its control circuit is usually at fault.
Related dishwasher codes
Samsung 3EDishwasher: Incoming water too hotSamsung HEDishwasher: Temperature not detected correctlyBosch E09Dishwasher: Heater faultBosch E12Dishwasher: Limescale in the heat pumpWhirlpool F4E3Dishwasher: Heating errorWhirlpool Sanitize light flashingDishwasher: Sanitize temperature not reachedSource: LG official support · Reviewed 2026-10-01