Query on sudden stoppage of water from borewell

Hi,

We have drilled a bore of 1100 ft , using submersible motor 5hp , with a 3phase connection. It was drilled in 2014 & was running fine till last week. Suddenly water has stopped pumping out.

What are the possible causes for the fault? How to rectify the same? Please advise .

Thanks

Priya

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