I get the Buzzer with an illuminated panel

Is this it?

https://manuals.brookstone.com/630285p_manual.pdf

https://www.google.com/search?q=manual+for+Brookstone+Pure+Ion+Advanced+Air+Purifier+Cleaner+Tower+Oscillating+506840

..

Try leaving it unplugged for a while to reset it.

If you go to this website, you will see that this model has a washable filter: http://www.brookstone.com/sl/product/65099-pure-ion-pro-air-cleaner.html
If you still have the literature that came with the purifier, contact their support number if your unit has a charcoal filter.

its probably producing OZONE you can review this fact sheet. hope this helps

Mac

http://www.arb.ca.gov/research/indoor/ozone_gen_fact_sheet-a.pdf

after cleaning is it dry. you might want to take apart and see what is clicking wheel or some thing hard to tell since i can't see it. as far as options . check with the manufacture google it check them out on line hope this helps. Tom

You can see the filter here.

http://www.brookstone.com/store/product.asp?product_code=561274&search_type=search&search_words=Pure-Ion%20&prodtemp=t2&cm_re=Result*R1C1*T

i am a low voltage tech my wife told me that our 506840 air cleaner stopped working so being a tech geek i had to know why it just stopped working.when plugged in i heard a click telling me that the main board was getting power.opened the back end where power cord goes to put my meter and voltage was going to the main power coil. but the main board was oxidized. when my wife was cleaning the filters and might not have had the filters completely dried the water was dripping down to main board.the unit to main power source is not design very well where water from cleaning the filters can drip down to main power board.solution i am working on is trying to get a new board when we bought this it was $499.00

I beleive your unit is overheating. this maybe due to build up on the air intake -rear of unit etc.
If there is no way to clean filters you may have to manually take it apart and remove dirt

I emailed Brookstone and they sent me the link one their site.
http://www.brookstone.com/search/pm_search.asp?cust_serv_id=0

They also said that you can find it through customer service product manual archive link.

I've had the same problem since the first time I tried to turn it on. I have to press the on button 20-25 times over a period of 5 min. to get it to work.