A schwintech slide has a control box that many times will be within a storage bay near the slide out. You should try to reset the box or unplug the power to the box that will also reset it. The lights on the box will flash out a code to tell you what the problem that the slide has encountered.
My schwintech slide has failed twice and both times it was the motor. Schwintech slides have a motor for each side, and both times the wires were cut by the slide movement at the motor. So in my case no reset or manual mode would work.
Chuck & Sandra
2010 F350 CC 6.4
2015 Prime Time Sanibel 3601