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LG Dishwasher HE Error Code

Water not heating properly. What it means, which models show it, and how to clear it, easiest fix first.

LGAll LG dishwasher codes

HE
May need a pro

The heater could not warm the water as expected, or the water got too hot. A fault in the heating element or its temperature sensing is the usual cause.

Compatible models

LG doesn't publish a model list for this code; it appears on LG dishwashers with a digital display. Check your owner's manual.

Also shown as

LG's help library gives the overheating limit as 149°F (65°C), while LG's parts site lists 194°F (90°C). Either way the fix is the same: reset, then service if it returns.

Difficulty

Try the basic checks, but the usual fix is a technician's job.

Safety first: unplug the dishwasher (or switch off its breaker) before touching filters, hoses or panels. If you smell burning or gas, or see water near the outlet, stop and call a professional.

How to fix LG HE

  1. Reset the power

    Turn the dishwasher off, then switch off its circuit breaker for about 10 seconds and switch it back on. Power the unit up and start a fresh cycle to see whether the code returns.

  2. Note the code and model number

    Write down the exact code, when in the cycle it appeared, and the model and serial numbers from the rating label (usually on the side or top edge of the door or tub). With nothing safe left to check yourself, this lets the technician bring the right part on the first visit.

When to call a technician

If HE returns after a power reset, the heater or sensor needs to be checked by an LG technician.

Parts linked to HE

These are the parts most often behind this code. Tap one to see what it does and the signs it is failing.

Order parts by your full model number so they fit.

Frequently asked questions

What does HE mean on a LG dishwasher?

The heater could not warm the water as expected, or the water got too hot. A fault in the heating element or its temperature sensing is the usual cause.

Which LG models show the HE code?

LG doesn't publish a model list for this code; it appears on LG dishwashers with a digital display. Check your owner's manual.

Can I fix LG HE myself?

Only the basic checks. You can safely try the steps above, but HE usually points to a part or fault that needs a technician.

What if HE keeps coming back?

A code that returns after a reset and the checks above usually means a part is wearing out. Note when HE appears (which cycle, how often) and have your model number ready; it helps a technician bring the right part on the first visit.

Other LG dishwasher codes

Last reviewed 2026-10-19. Codes and steps can vary by model; check your owner's manual.

Sources we checked