What HE means
The dishwasher is detecting the temperature inside incorrectly.
Likely causes
- Temperature sensor or heater fault
Safe first checks
- Empty the dishwasher, add detergent and run a Normal cycle.
When to stop
If the code returns, switch the dishwasher off at the breaker and request service.
Checked against: Samsung US: Samsung dishwasher is displaying an error code. Codes can differ by model and year, so confirm with your owner's manual.