210 ballast question

Hey guys. I just recently purchased a 2001 SAN 210. I took it out yesterday and i couldnt get the ballast to take in water. I have the Launch Control system open in the back. The knobs in back of the drivers seat are all the way open (turned counter clockwise). When i push the fill button on the dash, the light comes on but there is no sound from the pumps. But when i hit the empty button, the light comes on and i hear the pumps operating. I know im probably just missing something very simple. but any help would be great since i know there are some pretty knowledgable fellas on here.