I replaced all the filters on my RO unit. IT is about 3 years old. Everything was fine before I started. After replacing the filters, i turned everything back on. My refrigerator water and ice wouldn't work so I disconnected the line and bled the air out. It worked fine for about 2 hours and then no water again. So my water and ice from the fridge hasn't worked in about 6 months now. I've taken the RO unit open several times to make sure I have all the filters in correctly. Everything is right. All I did was replace the filters and have never had the water and ice since. Any help on this???