f73a157e_ion_and_Trouble_Shooting_Guide__PROBLEM
[CAUSE] - Over pressurized tank. - Incoming water pressure is below 40 PSI. - Tank valve not open. - Bad water storage tank. - Filters clogged. - Kinked tube. - "Fouled" membrane. [SOLUTION] - Check pressure with specially calibrated air pressure gauge. When empty, tank pressure should be 7 PSI. - Increase pressure to 40 PSI. May require a pump. - System takes 6 to 10 hours to completely fill. - Open tank valve. - Replace storage tank, If not bad, check that tank air pressure is between 7 PSI when empty. - Replace water filters. - Un-kink tube. If damaged, replace tube. - Replace RO membrane. [PROBLEM] 
Little water from faucet.
Water Filter and Reverse Osmosis Installation and Trouble Shooting Guide
PROBLEM