Dehumidifier displays HI and may run continuously without reaching set humidity

Safety: Unplug before opening the cabinet.

Steps:

• 1. Confirm humidity: Use a separate hygrometer. If humidity is indeed very high, the HI indication may be correct.
• 2. Improve room conditions: Close windows and doors, reduce other moisture sources, and allow the unit time to reduce humidity.
• 3. Inspect humidity sensor: Remove front cover and locate the sensor. Ensure it is not blocked by insulation or plastic and is in the airflow path.
• 4. Clean sensor area: Gently remove dust and moisture from around the sensor using a dry brush or compressed air.
• 5. Replace sensor if readings are clearly wrong: If the unit shows HI in a dry room, replace the humidity sensor module.