Dehumidifier shows E8 and stops, often accompanied by ice on the evaporator

Safety: Unplug the unit before working near the coils.

Steps:

• Allow ice to melt: Leave the unit off until all ice on the evaporator has melted. Place towels to catch water.
• Check ambient temperature: Ensure the room is not below the minimum operating temperature (often around 5°C). Very cold rooms cause excessive icing.
• Locate defrost sensor: It is usually clipped to the evaporator coil or tubing, separate from the main evaporator NTC.
• Verify attachment: Make sure the sensor is firmly in contact with the coil/tube. Reattach with a clip or aluminum tape if loose.
• Inspect wiring and connector: Look for damage or corrosion. Reseat the connector on the main PCB.
• Measure resistance: Compare resistance to the evaporator NTC at the same temperature. A reading of open or short indicates a bad sensor.
• Replace defrost sensor: Install a new Orbegozo-compatible defrost NTC sensor if faulty.
• PCB diagnosis: If sensors and wiring are good but E8 persists, the defrost control circuit on the main PCB may be defective and require replacement.