Dyson humidifier shows F14 and will not start misting, even though tank is full and seated

Safety first: Unplug the unit before inspecting the tank interface.

• 1. Inspect tank alignment: Remove and reinstall the tank, ensuring it is oriented correctly and fully seated. Listen for any click that indicates the interlock switch is engaged.
• 2. Check tank tabs: Examine the plastic tabs or protrusions on the tank that press the interlock switch. If they are broken or worn, the switch may not be triggered.
• 3. Visual check of switch: Look into the base where the tank sits to locate the small micro-switch or sensor. Ensure there is no debris preventing movement.
• 4. Test with gentle pressure: With the unit unplugged, gently press the switch actuator with a non-metallic tool (e.g., plastic stick) to confirm it moves freely.
• 5. Replacement: If the switch does not click or feels loose, it may be defective and require replacement by a technician.