Question about 3M Air Purifiers
This may help. For FAP02 and FAP03 reset the filtertimer by holding down the FILTERCHANGE button for three seconds.A red light comes on. Before it disappears, the light will start flashing quickly as you continue to hold thebutton. The timer is reset. https://www.manualslib.com/manual/565968/3m-Fap01-Rs.html?page=4#manual
Posted on Jul 03, 2019
Power Off the unit then Press and HOLD the Off-Timer and Function buttons at the same time WHILE Powering the unit back On. The Replace Filter light will blink for 5 seconds than go out. Now you can release the the buttons.
Just to make sure everything is working fine power off and on the unit.
On a side note if you are a tight wad like me you may want to just smak the filter layers against the ground a few times to clean them and re-use them / make them last longer. When the replace fileter light comes on too often then it is time to replace the filter.
No worries ;o)
Posted on Nov 16, 2008
SOURCE: red light on air filter
After spending hours searching for this supposed little hole easy to miss, I called customer service. I found out that it's easy to miss because it doesn't exist!
Here's the correct answer: Once you've replaced the filters, turn the unit back on. Then, with the machine running, press and hold down the on/off power button for about two seconds. The red light will flash and then turn off.
Posted on Apr 10, 2009
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.
Posted on Aug 23, 2009
I am also experiencing this problem, as well as 2 other people that I found on google, so I am inclined to think tha 3M has changed something in their manufacturing process, I think it very odd that this problem is manifesting itself at this time in different locations.
I have been using this product for sometime, and the problem of filters turning very dark did not exist when I started using this product
Posted on Feb 03, 2010
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