Humidifier mode produces very little or no mist even though the tank is full and no error is shown

Safety: Unplug and remove the water tank before servicing.

Steps to restore mist:

• 1. Clean transducer: Gently clean the ultrasonic disc with a cotton swab and white vinegar to remove scale. Rinse and dry.
• 2. Check water level: Ensure the tank design allows proper water flow to the transducer chamber and that any valves open correctly when the tank is seated.
• 3. Clear mist outlet: Inspect and clean the mist outlet channel and any directional nozzles.
• 4. If output remains weak: The ultrasonic mist generator module or driver circuit may be failing and should be replaced.