Filter Queen 3000A Defender Air Cleaner Manual

The light is a reminder to change the filter, it does not sense if the filter has been changed or not.
When the red light is blinking, press and hold both up and down arrows until the red light blinks RAPIDLY, release both for a second or two, and press and hold both again until it stops blinking.

Schedule: Remember, to receive the full benefit from your Defender® , replace your filters regularly. • Every 6 months, replace your Enviropure® Charcoal Filter. • Once a year (for Perpetual Warranty*)/up to every 3 years (depending on usage), replace your Medi-Filter® Cartridge.
Filters available from this Amazon seller: http://www.amazon.com/gp/search/ref=sr_in_-2_p_4_19?me=A2XHGJAEAIWR55&rh=i:merchant-items,n:!1063498,p_4:Filter+Queen&bbn=1063498&ie=UTF8&qid=1293951284&rnid=15899471
PDF manual here:
http://www.filterqueen.com/pdf/defender.pdf

1. Plug unit into outlet. 2. Press power ON/OFF switch to the ON position. 3. Allow unit to start running at low speed. 4. PRESS and HOLD both the UP and DOWN arrow buttons until the FILTER REPLACEMENT INDICATOR starts to blink. 5. Release both the UP and DOWN arrow buttons. 6. While the FILTER REPLACEMENT INDICATOR is still flashing, again PRESS and HOLD both the UP and DOWN arrow buttons untile the FILTER REPLACEMENT INDICATOR turns off.

If the steps above have been performed properly, the Filter Replacement Indicator will turn offand not flash again for 11 months. If the Filter Replacement Indicator remains on, repeat the steps again.
*Note that in step 6 above, the Filter Replacement Indicator MUST still be flashing when the buttons are pressed the second time.The Filter Replacement Indicator will continue to flash for approximately 3 seconds after the buttons are released as required in step 5 above.

I'm going to go out on a limb and guess you want the Defender model and not the Majestic model. I believe the latter is a vacuum. Here's a link to the Defender 360 manual. Best of luck.
http://www.filterqueen.com/pdf/defender.pdf

http://www.filterqueen.com/pdf/defender.pdf

www.atmostech.com

Did you find an answer to your orange light question? I have an AM4000 defender that I bought off Craigslist and thought I got a good deal on it. One minute after turning it on the red light came on. I tried to reset it but  the red light won't flash so you can't reset it. I don't know if it's a filter problem or a circuit board problem and I don't want to spend $100 bucks on filters to find out it's a different problem. If you buy filters on e-bay, they're cheaper but if you spend $100 from a distributor then you reactivate the warranty. I'm sorry I bought it.

Here is the link to the user manual; http://www.filterqueen.com/pdf/defender.pdf The red light indicates a filter needs replacing, see page 6 of the manual (page 9 of the pdf file) If filters have been replaced and the light still flashes, then the reset procedure (described on the same page) should work. If still flashing then there is a more serious, but probably fixable fault. Hope this helps - ask again if you need more info :)

When the red light is blinking, press and hold both up and down arrows until the red light blinks RAPIDLY, release both for a second or two, and press and hold both again until it stops blinking. It cured my problem.

Here is the link to the user manual; http://www.filterqueen.com/pdf/defender.pdf Hope this helps :)