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FREQUENTLY ASKED QUESTIONS
Air Quality Surveillance
Why is there is only one LED glowing all the time with the air quality surveillance function?
Indoor air has been clean the whole time.
For testing purpose, dust either caused by a cigarette or a dusty cloth can be released near the irritant sensor.
If the level of pollution goes up, then the unit should be operating properly.
The irritant sensor could be too far away from any irritant for it to detect. Please move the unit closer to your
major sources of pollution
Why does the air quality surveillance indicator always have two LED glowing?
Possibly because the room is not really a closed environment and pollution keeps coming in from the outside.
Or, because there has been pollution created indoors (e.g. smoking/pet boxes etc.) the whole time. It will
take some time for the Air Shield to achieve a clean environment with only one indicator LED on.
Why does the air quality surveillance function keep switching back and forth frequently?
Sometimes the Irritant Sensor is affected by cell phone or other wireless equipment. When using cell phone
or other wireless equipment, please stay away from the unit.
Odor Sensor
Why doesn't the Odor Sensor work?
In the initial set-up of the unit the Odor Sensor did not get properly trained. Please retrain the sensor memory.
(Please refer to page 4 on details under Before Use).
When first purchased or when the unit has been unplugged for more than a week, the sensor will not be as
sensitive. After 1 to 2days of operation, the sensor will regain its sensitivity.
Why does the Dust and Irritant Sensor keep blinking?
In some locations the top of the sensor will accumulate more dust than in others Locations, This will decrease
the efficiency of the sensor. (Please refer to page 8 for the cleaning of the sensor.)
Dust and Irritant Sensor
Advanced PureAir Air Shield Owner’s Manual
TM
