I had a similiar problem, when the Anderson 4-way valve is in the "Fill" position, I get a very, very little dribble into the fresh water tank. I tried using compressed air to blow thru the line, but even then was not getting any air thru to the FW tank. Filling the FW tank would take forever. I finally went Ace Hardware and got some clear flexible tubing and some fittings to make a fill hose that threaded into an extra plug on top of the FW tank. Now, I just hook my FW hose to it and fill it up in a few minutes. The water hookup is in the last compartment on the driver's side, FW tank is in a compartment on passenger side behind the entry door. So, I think something is plugging the line in that long distance.
__________________
|