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AC3821/20 Series 3000 2-in-1 air purifier and humidifier
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Series 3000 2-in-1 air purifier and humidifier

AC3821/20

My Philips Air Purifier accidentally powers off

If your Philips Air Purifier powers off unexpectedly, there might be a simple solution. Discover here how to solve it yourself.

The air purifier is restarting

When the power resumes, your Philips Air Purifier restarts automatically and goes to the previous mode.

The purifier was set to shutdown

If your purifier comes with the option to pre-set it to shutdown, then this might have been set.

The filter alert has been on for more than two weeks

If your purifier has been showing a filter replacement alert for more than two weeks but the filter was not replaced, it will be locked and shut down.

If this is the case, please replace the filter.

The information on this page applies to the following models: AC3821/20 , AC5659/20 , AC2882/50 .

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