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- Why do the indicators repeatedly turn on and off one after another, and the fan is also stationery?
- Why does the “Air Sensor” indicator keep blinking in green?
- Why does the "Air Sensor" indicator keep lit in green constantly without change?
- Why does the "Clean Humidifying Filter" indicator still light even after I have cleaned the humidifying filter?
- Why is there no humidifying effect?
- Why is the smoke smell not efficiently removed, or there is an odor?
- How often do I need to replace the dust filter?
- How often do I need to replace the deodorization filter?
- How often do I need to replace the Humidifying Filter?
- When do I need to clean the Humidifying Filter?
- What can I do in the case of water leak?
- What is the humidifying method applied on Hitachi air purifiers?
- Do Hitachi air purifiers produce ions?
- Which side should the 'FRONT' dust filter face during filter installation?
- Are Hitachi air purifiers ozone free?
- The "Air sensor" indicator keeps lighting in red constantly without change.