De'Longhi dehumidifier runs for a few minutes then shuts off; tank is not full and no error code is shown.

Safety first: Unplug the unit and allow it to cool before inspection.

Step-by-step:

• 1. Clean filter and grilles: Remove and wash the air filter. Ensure all air inlets and outlets are clear of obstructions.
• 2. Check room temperature: Very high ambient temperatures can cause thermal overload. Move the unit to a cooler area if possible.
• 3. Observe behavior: After cleaning, run the unit and time how long it operates before shutting off. Listen for the compressor stopping and any clicking from overloads.
• 4. Inspect fan operation: Make sure the fan runs continuously while the compressor is on. If the fan stops intermittently, the motor may be overheating and tripping.
• 5. Professional service: If short cycling continues after cleaning and relocation, a technician should check compressor current draw and overload devices.