Anyone running a PAT filter? January 19, 2012, 12:47:53 AM ... on a violet unit. Having trouble getting it to take the code for a 3 and 6 month filter change. (both light I and light II showing yellow, so both need changing, is my understanding). Because we're running it about 9 hours a day, changes are fairly rare, so rusty on it.I think that if I await the end of beeps with door open, then key in the 6 month code in the 10'ish sec interval, it should give me an OK beep sequence, then all LEDs go green, (from yellow). Then I can shut/secure the door and that's it. Not happening.I can get a Fuji contact call in the morn, but in the meantime I'm on countdown warning beeps.