Homedics humidifier shuts off immediately when the tank is installed, even when empty.

Safety: Unplug the unit before inspection.

Steps:

• Check placement: Ensure the tank is installed correctly and the unit is on a level surface.
• Inspect switch: Locate the tank presence or tip-over switch in the base. Ensure it moves freely and is not jammed.
• Test switch (advanced): With a multimeter, check continuity while actuating the switch. Replace if it does not change state.
• Replace switch: Install a new Homedics tip-over / tank presence switch if the original is defective.