What to do
- Reset at the breaker
Press Power to switch off. Turn the dishwasher's circuit breaker off, wait 10 seconds and turn it back on, then switch on and start a new cycle.
When to call an engineer
If HE comes back, LG says a service technician needs to inspect it.
A repair visit will usually check the heating element, its temperature sensor and the wiring back to the control board.
- Note the model and serial number. They're on a label on the edge of the door or the side of the tub.
- Write down the exact code, and what the appliance was doing when it appeared.
- Check whether it's still under warranty. If it is, the repair may cost you nothing.
Quick answers
What does the LG HE error code mean?
The heater isn't heating the water properly. LG's list says HE can also mean the water got hotter than 149°F (65°C).
Can I fix LG HE myself?
Engineer only (1 minute to reset). Start with: reset at the breaker. If HE comes back, LG says a service technician needs to inspect it.
Is LG HE worth repairing?
Get a quote first. Heater work needs an engineer. It's usually worth it on a newer dishwasher, but get a price first on an older one.
Checked against
Last reviewed October 2026. Manufacturers update their pages, and your manual is the final word. Spotted a mistake? Email contact@appliance-error-codes.com.