Hi, When I push the start button on my prowler 720 control box, it automaticlly goes from green to red. When disconnect the prowler from its control box it stays green. Is there something on the prowler cleaner it self I can check?

The power cord pins are numbered, 1 through 4. So are the transformer plug holes (the female pin holes in the "power pack"). For example, if you don't match number 1 to number 1, the green power light on the transformer will light for about 5 or 10 seconds, but the robot will sit there... well, like a powerless robot. Match the pin hole numbers and you have a working robot!