Why has my air purifier been displaying high PM 2.5 levels for several days?

The problem does not necessarily come from the device itself, but simply from the dust that has accumulated on the sensor(s).

We recommend that you vacuum the sensor(s) from the outside of the machine. To do this, unplug the air purifier and, from the outside, vacuum at the sensors. You can also use a can of compressed air, as for cleaning computers. The sensors are typically located on the side or bottom of the air purifier and are shaped like a snowflake.

When you are done vacuuming the sensor ports, the PM values ​​should return to normal. In order for the sensor to adjust to this new environment, we recommend waiting approximately 7 days before getting optimized readings. If the PM values ​​do not decrease after vacuuming the sensor, our customer service can perform a sensor calibration to resolve the issue.