De'Longhi humidifier leaks water from the base or around the tank.

Safety first: Unplug the humidifier and move it to a sink or waterproof surface.

Step-by-step:

• 1. Inspect tank: Remove the tank, fill it over a sink, and check for cracks or leaks from seams.
• 2. Check cap and gasket: Examine the tank cap and rubber gasket for wear or deformation. Replace the gasket or cap if damaged.
• 3. Verify valve operation: Ensure the spring-loaded valve on the tank bottom moves freely and seals properly when pressed.
• 4. Level placement: Place the humidifier on a flat, level surface. Avoid tilting which can cause overflow.
• 5. Replace tank if needed: If the tank is cracked or warped, replace it with an original De'Longhi tank.