Samsung Dishwasher HE error code

The dishwasher is reading the water temperature incorrectly - a heater system error. The machine cannot verify safe heating, so it stops the cycle.

Also shown as: HE, HE1

Last updated: October 6, 2026

Quick answer: Samsung dishwasher error code HE: heater system error. The most common cause is failed heating element. Try this first — run Samsung's empty-cycle test. If that does not clear it, power-cycle at the circuit breaker. If the code persists, call a qualified technician.

What causes the HE error?

  • Failed heating element
  • Failed thermistor (temperature sensor) misreading
  • Heater relay stuck on the control board
  • Loose or damaged heater wiring
  • Scale buildup on the heater from hard water

How to fix Samsung HE — step by step

Work through these in order, from simplest and safest first. Stop as soon as the code clears.

  1. Run Samsung's empty-cycle test
    Empty the dishwasher, fill the detergent drawer, and run a Normal cycle. If HE appears on the empty cycle, the heater circuit is confirmed faulty.
  2. Power-cycle at the circuit breaker
    Switch the breaker off for 30 seconds and back on, then retry. This resets the heater control after a transient trip.
  3. Check for signs of overheating
    If dishes or the tub feel unusually hot, or you smell burning, stop using the dishwasher. A relay stuck on can overheat the heater - that needs immediate professional attention.
    Safety warning: Do not run the dishwasher again if you smell burning.
Related guide: Dishwasher troubleshooting — fix common problems, with links to every dishwasher error code we cover.

When to call a technician

Stop and call a qualified technician if any of these apply:
  • HE returns on the empty test cycle
  • The heater, thermistor, or relay needs testing
  • There are signs of overheating or burning smell
  • Heater wiring is damaged

Frequently asked questions

What is the difference between HE and HC?

HE means the temperature is being detected incorrectly (sensor/heater circuit fault). HC means the inside actually got too hot. Both stop the cycle; HC is the over-temperature one.

Can hard water cause HE?

Heavy scale on the heater or sensor can contribute to bad readings. Regular cleaning and rinse aid reduce buildup, but a persistent HE is a parts fault.

Is it safe to keep using the dishwasher with HE?

No. The machine cannot verify water temperature, so it may under-heat (dirty dishes) or over-heat (damage risk). Get it serviced.

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.

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