Filter Queen Defender Air Purifier Logo
Posted on Sep 16, 2010

How do you reset the red light on the defender when you put in a new filter? My light has never went out and I think it is supose to .

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  • Contributor 10 Answers
  • Posted on Jan 03, 2011
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It won't go out by itself.
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.

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1helpful
1answer

How do you reset the filter reminder warning light?

Filter Replacement
Filter Replacement Indicator:
Your Defender® is equipped with a Filter Replacement Indicator located on the front
panel. Anytime this red indicator flashes, it is recommended that you call your authorized
FILTERQUEEN® Distributor to order a replacement filter. Anytime this red indicator stops
flashing and remains solidly illuminated, it is recommended that you change your filter. To
receive full benefit from your Defender® and to extend your warranty, it is strongly
recommended that you follow the filter replacement schedule suggested above. Under higher
pollution levels, your filters will need to be replaced more frequently.
The Filter Replacement Indicator is operated by filter time in use and is controlled by an
onboard timer. After 11 months of time in use of your Medi-Filter® Cartridge, the Filter
Replacement Indicator will begin to flash. It will continue to flash until the you reach 12
months of time in use, at which time the Filter Replacement Indicator will stop flashing
and remain solidly illuminated.
After replacement of your Medi-Filter® Cartridge, you must reset the Filter
Replacement Indicator's timer. When the timer has been properly reset, the Filter
Replacement Indicator will turn off.
Resetting the Filter Replacement Indicator Timer:
After replacement of your Medi-Filter® Cartridge per the instructions found on page 7, the
Filter Replacement Indicator's timer can be reset by performing the following sequence of
steps:
1 Plug unit into outlet.
2 Press power On/Off switch to the On ("I") 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 until the Filter Replacement
Indicator turns off.
If the steps above have been performed properly, the Filter Replacement Indicator will
turn off and 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.
Note: Under higher pollution levels, your filters will need to be replaced more frequently.
Note: To order replacement filters, call your authorized FILTERQUEEN® Distributor, or call
1-440-846-7800 for the Distributor nearest you.

http://www.filterqueen.com/pdf/defender.pdf
2helpful
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Mother gave me her filterqueen defender.. no manual. 360. There is a flashing red light even though its a new filter. Why?

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.
1helpful
1answer

How do you reset the machine, to get rid of the flashing red light after changing the filter?

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.
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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.
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I owned the previous model of the same unit with the hole for the paperclip. But it wore out and I replaced it with the HAP422 and found the same issue; no hole to "reset" the light. I was just fooling with it and determined that "some" switch would reset it and finally held the power on button on for a few seconds, after which, the red light flashed and then went out. Problem solved. BUT THERE IS NOT ONE WORD IN THE MANUAL TO TELL YOU THIS! WHY NOT?
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