The_Hollowed_One

I've ran into the same issue and after doing online research and testing combos of certain things I've made my system work. I've got 24 sprinklers, 12 on each floor of my farm first setup gave me the error and oddly enough didn't need to and anything to my fluid combiner all I did was take the wires from branch out of water and run them straight from power branch to pump, it worked! No trying to make it look neat just directly to the pumps. Well second setup didn't go for that and ended up running two pumps to fluid combiner and the third pump to a water barrel then to fluid combiner. Now system works as it should figured I'd let you know what I found that worked for me at least. Good luck