Dryer runs but clothes remain wet, E03 appears during or at end of cycle

Safety first: Unplug the dryer and allow it to cool completely before accessing the rear panel or heater housing.

• Check air filters and airflow first: Remove and clean the lint filter and condenser (if applicable). Poor airflow can overheat and trip safety devices.
• Access the heater: Remove the rear panel (several screws around the perimeter). Locate the heater housing on the back of the drum.
• Test the heating element: Disconnect the heater terminals. Use a multimeter to measure resistance across the element. An open circuit indicates a failed heater that must be replaced.
• Check thermal cut-out / thermostat: On the heater housing, locate the thermal fuse(s) and thermostats. Test for continuity. A blown thermal fuse usually indicates overheating from blocked airflow; replace the fuse and correct the airflow issue.
• Inspect NTC sensor: The NTC temperature sensor is often mounted on or near the heater duct. Check its connector and wiring. Measure resistance and compare with service data (typically 5–20 kΩ at room temperature).

If all components test good, the heater relay or main control board may be defective and should be checked by a professional.