Hello. I have such a problem. When I start the pump (by pulling and re-inserting the power cable) the pump runs. The output must be open and I can spray long. When I finish the spraying, I close the hose and the pump shuts off. The display will show "AUTO". When I reopen the hose, only a little water flows out and the pump no longer starts. I have to pull out again and insert the power cable. The display shows no error. I do not know these pumps, so please help.
Well thank you.