Please check the following:① Make sure the power plug is connected.② Check that the vacuum cleaner is properly installed. It will beep if set up correctly.③ If the dust stops emptying, pressing the "Start/Stop” button will restart the process.④ The dust-emptying mode is either automatic or manual:-The default setting for robot vacuum cleaners is Auto mode. The default setting for wireless vacuum cleaners is Manual mode.-For Manual mode, press the Stick Empty or Robot Empty buttons while the stick or robot vacuum cleaners are docked to begin the dust emptying process.-To switch between the Manual and Auto dust-emptying modes, press the Select Mode button for at least three seconds.