LG Dishwasher he error code
The water heating circuit failed. The dishwasher cannot heat water, so dishes will not get sanitized and will not dry properly.
Also shown as: he, HE
Last updated: October 6, 2026
What causes the he error?
- Failed heating element
- Faulty temperature sensor (thermistor)
- Broken wiring to the heater
- Failed heater relay on the control board
- Tripped thermal cutoff from overheating
How to fix LG he — step by step
Work through these in order, from simplest and safest first. Stop as soon as the code clears.
- Power reset the dishwasher
Switch the breaker off for 10 seconds and back on. A false HE from a power blip sometimes clears. - Check if water gets hot
Run a cycle and carefully open the door mid-wash. If the water and dishes feel cold, the heater really is not working.Safety warning: Open the door slowly. Hot steam can burn you if the heater is actually working. - Inspect for visible damage
Look at the heating element at the bottom of the tub for breaks, blisters, or heavy scale buildup.Safety warning: Unplug the dishwasher before touching the element.
When to call a technician
- Dishes come out cold and wet
- HE returns after a reset
- The element looks broken or burnt
- You smell burning during the cycle
Frequently asked questions
Will dishes still get clean with HE?
Partly. Detergent works in cold water, but sanitizing and drying suffer without heat.
Can limescale cause HE?
Heavy scale insulates the element and can make it overheat and fail, so descaling helps prevention.
Is the heater hard to replace?
It sits under the tub and involves wiring and seals. Most people call a technician for it.
Sources
Every meaning and fix above was checked against official manufacturer documentation:
FixCode provides general troubleshooting information only — not professional repair advice. If you are unsure about any step, stop and call a qualified technician. Repairs done incorrectly can be dangerous and may void your warranty.