Bill as Nash was saying, do you have a by pass valve that is used to winterize your Damon? If so you had to turn the bypass valve to get the pump to pump the pink thru the lines. Once you de winterize it the by pass valve has to be put in the correct position so the pump will pump from the holding tank. I know this first hand as I forgot to turn mine back to the correct position and it worried me to death trying to find out what has happen. Good luck and post back your finding.