Levoit humidifier shows CL on the display and will not change settings.

Note: CL is typically not a fault but a user‑activated lock.

Steps:

• Disable child lock: Press and hold the designated child lock button (often the lock icon or a combination like the power and minus buttons) for 3–5 seconds until CL disappears. Refer to the user manual for the exact combination for your model.
• Power cycle: If CL will not clear, unplug the unit for 5 minutes, then plug back in and try again.
• Check buttons: If the lock icon flickers or buttons are unresponsive, the touch panel or keypad may be faulty. Inspect for moisture under the panel and dry thoroughly.
• Replace control panel: If buttons remain unresponsive, replace the control panel / touch keypad assembly.