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
- 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.
- Test the thermistor at room temperature.
- Inspect the heater wire connectors; clean any corrosion.
- 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.
More Samsung dishwasher codes
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.