[RMcNeal]

If your talking about the Door Side rear slide (Living Room or Den area), the take a look at Ron's Post #12. That controller is on the ceiling in the compartment under the slide. Each motor is wired to the controller. If there's an error, the light will flash 1 or 2 times to indicate which motor, then a series of flashes. How many flashes indicate the error which you can determine on the label of the controller. It will be easier to work with if you take the controller off the ceiling. Only 2 screws holding it up.
Inside the window where the lights flash is a reset button. Pushing it 6 times and holding it down on the 7th will put it in override mode and allow you to bring in the slide in the event the Hall sensor fails or some other problem(s).