Dyson humidifier shows F6 and stops, often accompanied by unusual fan behavior

Safety first: Unplug the unit before inspecting vents or attempting any cleaning.

• 1. Check for obstructions: Shine a flashlight into the air outlet and intake vents. Look for foreign objects, dust buildup, or anything contacting the fan. Remove visible debris with long tweezers or a vacuum brush—do not insert metal tools deeply.
• 2. Listen to startup: After reassembling and plugging in, start the unit and listen. A humming sound with no airflow suggests a seized fan motor.
• 3. Clean vents thoroughly: Use compressed air or a soft brush to clean vents. Restricted airflow can cause the system to detect a fan fault.
• 4. Internal fan check: If you are experienced and comfortable, you may remove the outer shroud (if designed for user removal) to visually inspect the fan. Do not force any parts. If the fan blades are cracked or the motor shaft is loose, the motor assembly must be replaced.
• 5. Persistent F6: A recurring F6 after cleaning indicates a failing fan motor or driver circuit, requiring professional replacement.