What's Happening

The thermistor is reading water temperature incorrectly or the heating element isn't working. The dishwasher can't heat water to optimal cleaning temperature. This may also trigger if your home's hot water isn't reaching 120°F–149°F. On some models this displays as TE.

How to Fix It

Run the kitchen tap until hot before starting the dishwasher. Empty the unit, add detergent, and run a full Normal cycle. If the error returns, the thermistor or heating element needs professional diagnosis and likely replacement.

Frequently Asked Questions
What does HE mean on a Samsung dishwasher?
HE indicates a heating problem. The dishwasher can't heat water to the proper temperature, which could be a faulty thermistor, broken heating element, or low incoming water temperature.
How do I fix the HE error on my Samsung dishwasher?
Run the kitchen tap until hot, then start a Normal cycle. If the error keeps returning, the thermistor or heating element needs professional replacement.
Do I need a technician for a Samsung dishwasher HE error?
If running hot water first doesn't resolve it, yes. The thermistor and heating element require disassembly and multimeter testing, which is a professional repair.
Samsung Dishwasher Error Code HE — Cause, Fix & Parts | DecodeAppliance | FixCode