While there is a power button on top of your DEEBOT, there is a master on/off switch on the bottom of your robot (newer ones have them on the side).
The master on/off switch needs to be ON to charge, to remember its schedule, to use the remote, and to clean. The switch can be a tad confusing. The "|" is ON... the "O" is OFF. Just leave it ON, and your DEEBOT will be happy.