Crane humidifier turns on but shuts off after a few seconds with no error code.

Safety first: Unplug the humidifier and remove the tank.

• 1. Reseat the tank:
  • Refill the tank fully and reinstall, ensuring it sits flat and the valve pin opens.
• 2. Clean float chamber:
  • Locate and remove the float from the base.
  • Clean float and chamber with mild soap or vinegar solution.
  • Ensure the float moves freely.
• 3. Inspect sensor:
  • Check the float magnet and the reed switch or Hall sensor for damage.
• 4. Test operation:
  • Reassemble and run; if the unit still shuts off quickly, the float sensor assembly may need replacement.