Air Purifier Behavior Question

when the air purifier loses power,and then has power restored, it does not turn back on or retain the the fan settings that were running before the power failure. Is this normal behavior for the device? It would be nice if it would resume operation it was doing before the power loss.

Yes, it’s like unplugging it while it’s running and then plugging it back in. You still have to turn it on via the power button.