Reverse Osmosis Tank Not Filling After Filter Change
I can only think of two things to check and the first I hate to even ask. 1) did you forget to open the valve at the top of the tank? 2) Check to make sure none of the tubing became crimped or pinched anywhere. Unless you removed more connections than needed, system flow should not have changed but here is diagram of system (you may have one more filter in line with the charcoal filter) http://www.waterfiltersonline.com/installation-diagram-4-5-stg.asp