What to do if the display of the Mijia Smart Air Purifier Max shows "Cover not closed or Filter not installed"?
If the display of the Mijia Smart Air Purifier Max shows "Cover not closed or Filter not installed", please refer to the following steps to troubleshoot:
1. Please check if the main unit's filter compartment door is closed securely. If not, please reassemble it.
2. If the air purifier's filter is not installed, this message will also appear. Please install the filter correctly and then check if the message still appears.
3. If there are foreign objects in the door gap, it will affect the door closure, leading to the "door not closed" warning. Please check the door gap for dust, hair, paper scraps, etc., that can interfere with the door closing and the trigger switch. Additionally, please clean the air purifier regularly to ensure its efficient operation.
4. If the filter element is not properly seated in its slot, the compartment door will not close completely. Please remove the filter element, clean the positioning slot, and reinstall it securely, ensuring there is no looseness or deformation.
5. You can try turning off the power for 10 seconds and then turning it back on to see if the problem persists.
6. If the issue still persists, please contact our local official after-sales service center for further assistance.
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