What does HE mean?
Water is not heating properly.
Common causes
- Heater failure
- Thermistor fault
- Wiring
What you can safely check
- Power-cycle the dishwasher
- Schedule service if it repeats
Safety first. Unplug the appliance (and shut off gas or water where relevant) before inspecting it. Codes and procedures vary by model — check your owner’s manual.
When to call a technician
If the code comes back after these checks, or you see leaks, burning smells or tripped breakers, stop using the dishwasher and schedule a technician. Our team repairs LG dishwashers every week.
Frequently Asked Questions
What does LG dishwasher error code HE mean?
Water is not heating properly.
How do I fix LG code HE?
Power-cycle the dishwasher. Schedule service if it repeats.
When should I call a technician?
If the code comes back after these checks, or you see leaks, burning smells or tripped breakers, stop using the dishwasher and schedule a technician. Our team repairs LG dishwashers every week.
Other LG dishwasher codes
Updated Oct 29, 2026