Dennis, Tim recently posted my Alladin System Users Manual in the Coach Assist area, accessible via the Private BAC Members Only section of this Forum's Home page. Page 12 will guide your recalibration as per Chuck's advice.
EC means Empty Calibration, and FC means Full Calibration in the instructions. The system needs to relearn where those extremes are, then by sensing the weight of fluid, it can report those extremes and any volume of liquid in between.
Joel