Samsung · Dishwasher Moderate

HE — Heater temperature detection error

The heater isn't reaching expected temperature, or the temperature sensor reading is inconsistent with heater operation. Drying/sanitize may fail.

Keep using it?
Yes, with caution
DIY difficulty
Moderate
Verified against
samsung.com ↗

How to fix it

  1. Empty the dishwasher and run a Normal cycle with detergent.
  2. If still no heat, disconnect power and pull the dishwasher to access the heater terminals under the tub.
  3. Test element resistance (~10–40 ohms typical) — open means replace.
  4. Test the thermistor at room temperature.
  5. Inspect the heater wire connectors; clean any corrosion.
  6. If element and sensor test good, replace the main control board.

Why it happens

Typical signs: HE on display · Dishes come out cold or not dry · Cycle takes much longer than usual · No steam visible at end of wash

  • Open heating element Element broken internally — no heat produced.
  • Failed temperature sensor Thermistor open or out of spec.
  • Main board heater driver failed Triac/relay not firing element.
  • Loose heater wiring Quick-connect at element terminals corroded.

Parts you may need

If diagnosis points to a failed part, these are the common replacements. As an Amazon Associate we earn from qualifying purchases.

  • Samsung dishwasher heating element Common replacement
    Amazon →
  • Samsung dishwasher temperature sensor Common replacement
    Amazon →

Related repair guides

Dishwasher Not Drying Dishes — How to Fix It →

More Samsung dishwasher codes

1C 1C — Low water level / fails to start 1E 1E / IE — Filter clogged / heater fault 3C 3C Error — Wash Pump Failure 3E 3E — Hot water supply too hot 4C 4C / 4E — Water Supply Error 4C5 4C5 / 4E5 — Fill timeout with dry tub

All Samsung codes → All dishwasher codes →

Frequently asked questions

What does the HE code mean on a Samsung dishwasher?

The heater isn't reaching expected temperature, or the temperature sensor reading is inconsistent with heater operation. Drying/sanitize may fail.

What causes the HE code on a Samsung dishwasher?

Open heating element: Element broken internally — no heat produced. Failed temperature sensor: Thermistor open or out of spec. Main board heater driver failed: Triac/relay not firing element.

Is it safe to keep using a Samsung dishwasher with a HE error?

Yes, with caution. This is rated a moderate-severity fault.

How do I fix HE on a Samsung dishwasher?

Empty the dishwasher and run a Normal cycle with detergent. If still no heat, disconnect power and pull the dishwasher to access the heater terminals under the tub. Test element resistance (~10–40 ohms typical) — open means replace.

Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician. Verified against manufacturer documentation: samsung.com.