What to do if the water in the Mijia Smart Air Purifier with Humidification Pro turns yellow after extended use?

If the water in the Mijia Smart Air Purifier with Humidification Pro turns yellow after extended use, please refer to the following aspects:
1. Water discoloration is related to airborne dust and water quality. Dust particles in the air can be drawn into the device through the air inlet and settle into the water tank after passing through the filter.
2. Metal ions such as calcium, magnesium, and iron, as well as sediment particles in tap water, can also cause water discoloration after interacting with the filter.
3. Discolored water does not affect normal operation. It is recommended to clean the water tank and filter once a week, or use purified water from a water purifier for humidification to effectively reduce discoloration.
4. Before adding water, empty any remaining water in the water tank and refill it with clean water. Avoid leaving water in the water tank for an extended period.
5. If the water remains noticeably discolored after regular cleaning and using purified water, please contact the local after-sales service center for further assistance.