Washer-dryer combo stops heating water or drying and displays HE or HE1/HE2 depending on model.

Safety first: Unplug the unit and allow time for internal components to cool. Water and electrical heating elements are hazardous if mishandled.

Steps to check:

• Verify power and settings: Ensure the cycle selected actually uses heat (for washing or drying). Confirm household power supply is stable.
• Access heater connections: Remove the rear panel to access the wash heater (usually mounted in the lower rear of the tub) and the dry heater (in the air duct). Check for burned connectors or loose wires.
• Inspect for visible damage: Look for signs of overheating, such as melted plastic or scorch marks around the heater terminals.
• Basic continuity check (advanced): If you have a multimeter and skills, test the heater element and NTC sensor for continuity and resistance within Samsung specifications.

When to stop: If the heater or sensor is open or shorted, it must be replaced. Because this involves high-voltage circuits and sealing against leaks, heater replacement is best performed by a qualified technician.