Submersible pump no water, water or water out of an indirect shortage 1, check the motor. Look at the motor has started, did not start, check the motor circuit to eliminate the circuit fault can; see the motor line is connected correctly, check whether the pump reversal, pump reversal, the exchange of power cord can be. 2, check the pipeline. Look at the pipeline is blocked, broken, whether the filter plugging. If the pipeline should be repaired welding or pipe repair, remove the blockage, the fault can be ruled out. 3, check the pump case seal, check the impeller is damaged. Remedy: Replace the new seal, impeller. Second, the motor can not start with a buzz 1, check the motor circuit, whether a phase circuit, check the voltage, the voltage is too low. Circuit repair, adjust the voltage is normal, the fault can be ruled out. 2, check whether there is foreign body in the impeller, the bearing is damaged, remove foreign matter or replace the bearing. Third, the current is too large, ammeter pointer swing 1, the purchase of a new pump, the reason for shaft bending, bearing different heart, immediately returned to the sales department or manufacturers. 2, check the thrust bearing is worn seriously, impeller and seal ring whether there is friction marks. Remedy, replace the thrust bearing or thrust plate, impeller rotation no longer friction with the seal ring can. 3, check the relative rotation of the shaft and shaft is flexible, flexible rotation, should be replaced or repaired bearings. 4, moving water level down to the inlet below. Should reduce the flow or well change. Fourth, the unit running violent vibration 1, check the connection bolts are loose, bolts should be tightened. 2, there rotor unbalance, pump impeller imbalance, motor or pump shaft bending failure, should be sent to the manufacturer for processing.