Humidifier runs but produces no visible mist, water level in tank does not decrease.

Safety: Unplug the humidifier and remove the water tank before cleaning.

• Check water level: Ensure the tank is filled and properly seated so that water flows into the basin.
• Clean the membrane: Locate the ultrasonic membrane at the bottom of the basin. Soak a cloth or cotton swab in white vinegar and gently wipe the membrane to remove scale. Then wipe with clean water and dry.
• Use softer water: Switch to distilled or demineralized water to reduce future mineral buildup.
• Test operation: Reassemble, fill the tank, and run the unit. If there is still no mist and you hear no gentle buzzing from the atomizer, the transducer or driver circuit may be faulty.
• Advanced repair: Replacing the atomizer assembly requires opening the base and disconnecting the atomizer wiring from the PCB. If you are not experienced with appliance repair, contact a technician.