Air Purifiers

I cleaned what was a normal functioning ionic breeze and now when i plug it back in the cleaning indicator light will not turn off. It will not filter air through it. Has anyone been able to resolve this problem. I have read a TON of not helpful info regarding class action suits and bankruptcies of sharper image but dont really care about any of that I just want it to work again. I have it is to late to do anything about it CAN SOMEONE HELP me. Is there a fuse or something that needs replacing. I have tried to hold the power button down for 30 seconds to reset? the machine but that did not work Please help

I have a HEPA type Holmes Air Purifier (Model # HAP422SRC-U) with a filter indicator light. It’s light came on, so I changed out the filters. While I was at it, I added carbon/odor grabbing filters. The instructions included with the carbon filters said to remove the foam pre-filter (it wasn’t needed), so I did. The indicator light is still on, but I can’t find anything online or in the manual about HOW to reset it. The box just says "reset when changing the filters" … grrrrrr!!! Shouldn’t it auto reset??
I just got an email from Holmes … if you hold the power button down for about 3 seconds (while the unit is on) this will reset the indicator light. It worked!