I've cleaned my air cleaner like I was supposed to. When I put the blades in the red light that says it needs cleaned keeps blinking.and the five minute spurt doesn't work. Do you have any suggestions?

Unfortunately Sharper Image has discontinued support on the product line.  There was a recall going on with the product but since the company is chapter 11 right now, I don't think it is being honored right now.  
What happened was Consumer Reports ran a test on ionizers, Sharper Image received a bad score and filed a lawsuit.  They lost the suit and had to pay all legal bills causing Sharper Image to reorganize.  
The EPA has reported that using ionizers in a house or business may be harmful to your health.  You can read an article about it on their website.  
The Consumer Products Safety Commission is going to release a final report on all ionizers by the end of the year.  Their decision may discontinue all sales of any ionizers in the United States.  This industry should have been regulated years ago just by the EPA data alone and for some reason it has been ignored.