The pump is damaged and cannot reach cut-off pressure. The pressure control switch cut-off is set too high. Water level in the well is too low and a tailpiece is recycling water through the pump system. Pump has lost prime due to leak in well piping or a failed check valve or foot valve.
Why is my water not pumping?
A tank or pump failure can be caused by a number of factors: age, low-quality components, running without water, constant cycling or a clogged intake valve. Water pumps and pressure tanks don't need much in the way of maintenance, but they do need the right environment to reach their life expectancy.
How do you get rid of an airlock in a water pump?
https://www.youtube.com/watch?v=aGfVx_agplg
How do you reset water pump?
https://www.youtube.com/watch?v=8i6c8DyjOig
Can a submersible well pump get clogged?
It is not uncommon for submersible well pumps to become clogged with debris such as mud. A clog will interfere will the well pump's ability to function properly. Fortunately, clearing the mud from the screen and the intake will restore the submersible well pump back to working order.