Dehumidifier displays E8 and shuts down; may occur after long operation.

Safety: Unplug the unit before working near the evaporator coil.

• Defrost the unit: Turn off and unplug the dehumidifier. Open covers enough to allow warm room air to reach the evaporator. Let all ice melt completely (this can take 1–2 hours). Do not use sharp tools to remove ice.
• Locate defrost sensor: The defrost NTC is usually clipped to the lower part of the evaporator coil or attached to a copper tube. Ensure it is firmly in contact with the metal surface.
• Inspect wiring and clip: Check that the sensor wires are intact and the clip is not loose or corroded. Re-secure the sensor if it has moved.
• Measure resistance: With the unit unplugged and sensor disconnected, measure resistance at room temperature and compare to the ambient NTC if similar type. An open or shorted sensor must be replaced.
• Replace sensor: Install a new Klarstein defrost NTC sensor if faulty. Route wiring away from moving fan parts and sharp edges.
• Check airflow: Clean the air filter and ensure intake and exhaust grilles are not blocked. Poor airflow can cause excessive icing and trigger E8.