LG top load washer not spinning- tamil

LG to load washing machine found overfilling, some time not spinning, trouble shoot explain in tamil, root of cause many possible- 1. Water level sensor issue 2. Water level sensor convey tube leaking. 3. Water drum level passage blocked
Normal checks of sensor working could be found by, disconnect hose from water level container and blow by mouth slowly to raise the pressure of tube which will activate water level sensor unit diaphragm and will give signal to PCB, incase sensor at good conditions. If it's not check hose for any air leakage, both are not the issues, clean the water level container passage