Understanding the Samsung HE Error on a Washer
The HE error on many Samsung washers typically indicates a problem with the washer’s heating system—commonly the steam or water-heating circuit used for sanitizing and steam cycles. When the control detects that the heater or temperature-sensing circuit is faulty, missing, or reading out-of-range, the washer displays the HE code and may stop or restrict affected cycles. This occurs most often in models with a built-in heater (steam washers or washer-dryer combos) when a heating element fails, a temperature sensor (NTC thermistor) reports erratic values, the heater relay on the main control board malfunctions, or wiring/connectors develop shorts or corrosion.
Common user impacts include: interrupted or canceled steam cycles, longer wash times when the machine attempts retries or falls back to cold cycles, poor sanitization or stain removal (since heated water aids cleaning), error beeps and flashing lights, and potential safety concerns if a short or overheating condition exists. In some cases the washer may still run basic cold-water cycles, but steam features and temperature-controlled sanitation will be disabled until the underlying issue is repaired.
Common Causes
- Failed heating element (open or shorted)
- Faulty NTC temperature sensor/thermistor (incorrect temperature readings)
- Defective heater relay or MOSFET on the main control board
- Damaged or corroded wiring harness and connectors to the heater or sensor
- Blown thermal fuse or safety cutoff
- Moisture intrusion or water damage to the control board or heater connections
- Software or firmware glitch causing false HE detection (less common)
Troubleshooting Steps
- Power cycle and reset: Turn the washer off, unplug it or switch off circuit breaker, wait 1–2 minutes, then restore power. Some transient faults clear after a reset.
- Check the user manual and error code guide: Confirm the HE interpretation for your specific Samsung model (manual or Samsung support site). Some models label heater or temperature faults slightly differently.
- Run a diagnostic/self-test: Many Samsung washers have a service/test mode that reports component status. Use the model-specific sequence to enter diagnostics and look for heater or sensor error results.
- Inspect visible wiring and connectors: Unplug the washer and check the heater area and control board connectors for loose pins, burned insulation, corrosion, or signs of water damage.
- Test the heating element: With power off and the heater disconnected, measure continuity with a multimeter. An open circuit usually means a failed element; a short to grou