Replacement filter 3308125

I had similar issues and by replacing the 2200 micro (Mu) Farad, 10 Volt capacitor on the PCB, all of my issues ceased.
Below is a link with information supplied by "fixya" that explains the procedure/details.
Hopefully this will solve your current issues.
Good luck,
Mike
http://potlash.org/feast/2010/11/20/repairing-a-jet-afs-1000b/

PS Linda Haus of "Rockler" Technical Support was kind enough to supply me with this link.

I use a dry micro soft cloth on the wire.

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

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.

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.

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.

Check the micro swtch in the back, it activates power to the unit when you reinstall the filter. the switchwill make a clicking noise if the filter is installed properly.

there is a micro switch that the metal rim of the filter that must contact in order for the fan to run tha unit to run. a bend or warpage in that metal filter housing will cuase contact problems with that switch causing it not to run

Unit likely had large partical like dog or cat hair cross over cell, Unlplug and remove pre-filter & cell.

The unit has a timer that knows when power has been removed & front grille has been taken off by 2 micro switches in back of front grille that is connected to the units control board.

While you are there remove pre-filter & Cell, if ok and no debris is found & theres no need to wash, wait 10 to 15 minutes replace all & plug back in.

You should see the LED display flashing Clean Cell & Cell button flashing, hold Cell button in at least 3 seconds this may take longer to reset. Unit should turn back on.

This condition has happened to my 2 units on occasion even though I had washed the cell only a week or two previously.

The unit will turn off if a cell overload is detected by way of large static discharge. If I know the cell is clean, I just unplug the unit & take the front grille off for 15 minutes then & replace it plug back in & reset & all goes back to normal operation.








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http://www.totalvac.com/HAPF600.html?zmam=6843742&zmas=1&zmac=6&zmap=HAPF600

You can actually use the size B....made by Holmes...Also C for the carbon filters