Samsung identifies HE as a heater error in which the temperature inside the dishwasher is being detected incorrectly.
What HE means
Samsung identifies HE as a heater error in which the temperature inside the dishwasher is being detected incorrectly.
What you may notice
- The cycle stops or will not start
- The display shows HE
- The dishwasher may beep
- The code returns after Cancel
Most likely causes
- 01A temperature sensor fault
- 02A heater circuit fault
- 03Damaged wiring
- 04A control problem
Safe checks, in order
Start with the simplest non-invasive check. Stop as soon as the error clears; repeated resets can hide a condition without correcting it.
Empty the dishwasher
Remove dishes and let the interior cool.
Run one Normal cycle
Add detergent and run the model-approved test cycle.
Disconnect power if it returns
Turn off the dishwasher circuit and arrange service.
Know where to stop
Do not continue repeated heated cycles or open the electrical and heater system.
When to call a technician or support
Request Samsung service if the code returns after the safe checks above or if leaking, overheating, electrical odor, or abnormal mechanical noise is present.
When you call, have the exact product or vehicle model, model year where relevant, the complete code or symbol, and when it appeared.
Where this information came from
We use the manufacturer's current published guidance as the starting point, then organize it into a safer, beginner-friendly sequence.
Samsung Support — dishwasher error codes Source last checked August 16, 2026. Manufacturer instructions and model manuals take priority over this independent summary.