Crane humidifier with built-in humidistat runs continuously and does not shut off at the set humidity.

Safety first: Unplug the unit before accessing the sensor.

• 1. Verify with external hygrometer:
  • Compare room humidity with a separate hygrometer to confirm the built-in reading is inaccurate.
• 2. Clean sensor area:
  • Brush dust from the sensor grille.
  • Ensure the sensor is not directly in the mist path.
• 3. Dry condensation:
  • If the sensor area is damp, allow the unit to dry completely.
• 4. Replace sensor:
  • If readings remain inaccurate, replace the humidity sensor module.
• 5. Control board check:
  • If a new sensor does not restore proper cycling, the control PCB may be defective.