This is what I think is happening. I think there could be a split in the water line coming from the pump to the pitless adapter. Then all the water runs out and back down the well. I can see this happening in my water filter, running in reverse I mean. Then when the pressure is drawn down in the tank it calls for more water from the pump. It happens every 6 minutes.
Either there is a split or there should have been a check valve at the top of the pump and I would have installed one except I was told that particular pump had a built in valve.
So to remedy this situation I need to pull the pump up and check the water line AND install a check valve for my own satisfaction.
Sheesh! That's nothing more than a typical A-gang submarine engine room job!