I think you could have another alarm that is not part of the Big Foot leveling system. If all the light are correct no alarm will be given on this system. To verify, remove fuse and/or circuit breaker for the leveling system and see if the alarm continues or stops.
Mike, RVIA & RVSA Certified Master RV Technician
Amy, Dr. Assistant - Roxie & Mei Ling, four legs each
2000 Gulf Stream Scenic Cruiser 450 hp & 1330# torque
06 Saturn Vue, 06 Chevy Z71 4x4 & 2014 Corvette Z51 M7