First Timer - Water tank reading empty after pump turned on

keymastr wrote:
If it had been winterized when you filled it the low point drains may still be open or the water heater plug may be out. The pump will then pump water until it empties the tank.

No water on the ground kind of indicates drains not open let alone the pump stops when the pressure builds. It sounds like one of the sensors, maybe 3/4 not working, maybe a wire off. My tank sensors all work great.