Them motor seems to be working fine but it is not pumping water. Need help


Our borewell is 840 ft deep but we got water at 780 ft. We have installed Texmo submersible motor. It runs for few seconds and the meter reads at 12-15 amps but there is no water. I get the message on display 'dry'. Someone was saying that I should have got some water at least after monsoon re-charge as I did get water in the first 6 months of digging the borewell.

Please suggest what needs to be done. Is it the problem with the borewell or with the motor?