I finished installing my 8fun geared hub, and all cabling, controller, LCD, and battery. Ready to give it a test run, BUT when I apply throttle or peddles (PASS) I GET AN ERROR: 03 (motor hall signal abnormality). All cabling checks out. The PAS and throttle, and brakes , the battery level, all indicate well on the LCD. Anybody have any ideas about what the problem is? Would appreciate your thoughts.