Per 16ACE27...... Levelers and Slides only use the house batteries. Sometimes the engine needs to be running so the alternator can provide a boost to the house batteries to get the voltage level where it needs to be to properly operate the slide motors or the leveler motor.
If you are not holding the Extend or Retract button for 5 seconds after the slide is fully open and stopped or fully closed and stopped, the motors will eventually get out of sync and you can experience the issue you described.
To resync the motors properly you need to.....
- Open the slide fully
- Close the slide 3 - 5 inches and stop
- Open the slide fully and hold the extend button for 5 seconds after the motors stop
- The repeat this process a total of three or four times
This will resync the motors and they will stay synced as long as you always hold the Extend / Retract button for 5 seconds after the motors stop.
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