AirDoctor is always filtering the air when it is turned on, even when the light is blue. The light will change color as the air quality changes from Blue -> Orange -> to Red.
If you run AirDoctor in Auto Mode, the fan speed will increase in AirDoctor with each color change of the Air Sensor Light. When the AirDoctor’s blue light is on, it’s telling you the air within your home is within EPA-approved standards for pollution.
If the AirDoctor detects an increase in contaminants in the air, and it’s in Auto Mode, it’ll adjust the fan speed to take care of the problem.
If you feel that the sensor is no longer working, please try the following tests:
- Turn on the AirDoctor and let it run for two minutes.
- Locate the air sensor on the left side of the air purifier. It's behind a small door.
- Then, light up a match/candle and blow it out and make sure the smoke is directed towards the air sensor. You can also try to take an old pillow and fluff it next to the sensor.
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After you've blown up the smoke near it the light on your AirDoctor should turn orange/red within a minute or so.
- If the air sensor LED light did not change color please contact customer service by submitting a request here
Please note: The air sensor will only detect particulate matter and cannot detect VOCs.