Blueair 400 doesn't go off speed 3 - Blueair 403 HEPASilent Air Purifier, 365 Sq. ft. Room Size, 30-70W, 4 Speeds 75-240CFM, 27-51 dB Noise Levels, 240 CADR Clean Air Density Rate, 33Lb

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Make sure the filters are properly seated. Contact them at Support direct. It sounds like it might need dealer repair.

https://www.blueair.com/ca/customer-support.html

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It might reset if u unplug it for 15 minutes then replug it in

Hi there.

15 amp. Also remember there is a reason why the fuse is not working. Goodluck ..

Lubricate the motor

That's interesting... I doubt it is the filter if the new filter did the same. It might help if you take a fan and blow it through the area behind the filter, or maybe even spraying some Lysol in it, because my best guess is that something inside the purifier is what is causing the smell. Hope this helps!

Hello, this is Ava with Think Crucial.

You may find the User's Manual for your Blueair model by clicking the link below.

http://homeappliance.manualsonline.com/manuals/mfg/blueair/301.html

You can purchase a wide variety of high quality Blueair replacement parts for your Blueair Air Purifier direct from Think Crucial with free shipping and an exclusive 10% coupon for Fixya.com readers, use code: FIXYA10

https://www.thinkcrucial.com/collections/vendors?q=Blueair

I hope this was helpful.

Ava B.
Think Crucial Customer Care
http://www.thinkcrucial.com/

Hi, I have had the same problem and have figured out how to open it.

To open your blueair air purifier, follow the steps below;
1. Get a phillips head screwdriver,
2. Open the unit and remove the air filters.
3. Use the phillips head screwdriver to remove the screws that you can see.
4. After taking out the screws, remove the "galvanizedSwedish steel housing" (cream coloured sides) of the purifier by lifting it upwards (i.e. from bottom to top of unit).
4. You will now have access to the interior of the purifier.
5. You can now take out the fan and clean it, or what ever part you are trying to clean. I used a Dyson HEPA vacuum cleaner.
6. To reassemble, reverse the instructions above to reassemble the purifier.

The power cord had burned out right at the point where it connects to the female receptable (the end that connects to the unit). Need replacement cord.

I had the same issue.  Press and hold the 'TIMER' button untill you hear a beep and it will reset.

check power outlet / test the Blue air power cable w/tester continuity , switch on and off, tester move forward and reverse meter means good plug/ if does not move the fuse of the unit is open.need to replace.