What should I do if the PM2.5 value is displayed abnormally or not on time?

Solution:

 When the PM2.5 value display is inaccurate or abnormal, you can check whether the door of the laser particle sensor on the back of the fuselage is dirty and blocked. If it is clogged with dirt, open the laser particle sensor door with a non-sharp tool, use an air gun or blower

(Do not use hot air.) The filter and sensor on the door can be cleaned. Use a waste toothbrush dipped in clean water to gently scrub the filter of the laser particle sensor door, clean it and dry it before putting it back for testing. If the cleaning is invalid, please contact the after-sales service, and professional after-sales technicians will handle it. The values of multiple air cleaners in the same environment are different, and the values will also be different due to environmental factors such as different heights. It can be tested in sleep mode and with different levels of smoke. If the error value increases linearly, it means that the laser particle sensor is faulty. If the error value is within a certain range, it means it is normal.