Solenoids actuated valves are on/in the pump. Do you see wires besides the motor wires?
My Lipper pump leaked and the motor stopped running. Right at the 2 year warranty and when I pointed out the 3 design flaws with the pump they sent me a new designed replacement.
The leak needs to be fixed in addition to the slide drift. Have you tried the manual procedure for operating the slides? If not that will reveal the second design flaw if your pump is like mine.
2009 Holiday Rambler 42' Scepter with ISL 400 Cummins
750 Watts Solar Morningstar MPPT 60 Controller
2014 Grand Cherokee Overland
Bob