Dehumidifier will not start and displays E1 on the control panel

Safety first: Unplug the Orbegozo dehumidifier from the mains before removing any covers. Do not work on the unit while it is connected to power.

Step-by-step checks:

• Power-cycle the unit: Unplug for 5–10 minutes, then plug back in and try again. Sometimes E1 is a transient sensor read error.
• Access the control area: Remove the front or top cover (varies by model such as Orbegozo DH series). Keep screws organized.
• Locate the ambient NTC sensor: It is usually a small probe or bead-type sensor near the air inlet grille, connected by two thin wires to the main PCB.
• Inspect wiring and connector: Look for broken wires, pinched cable, or corrosion at the plug on the main board. Reseat the connector firmly.
• Check sensor resistance (if you have a multimeter): At room temperature (~20–25°C), most NTC sensors should read between 5 kΩ and 20 kΩ (exact value depends on model). An open circuit (OL) or 0 Ω indicates a failed sensor.
• Clean dust and oxidation: Use a soft brush and contact cleaner on the connector if it looks dirty or oxidized. Allow to dry fully before reassembly.
• Replace the sensor if faulty: If resistance is out of range or intermittent when you gently move the wires, replace the ambient NTC sensor with an Orbegozo-compatible part for your exact model.
• Consider main PCB failure: If a known-good sensor still gives E1, the sensor input on the main control board may be defective and the PCB will need replacement.

When to stop: If you are not comfortable using a multimeter or removing covers, contact an authorized Orbegozo service technician.