Make sure both battery disconnect solenoids have been turned on. If this does not correct the problem then usually, there are in line fuses behind the deck. Pull the unit out of dash and check fuses. If you find they are good disconnect the unit completely from power for a minute and then re-power the system. Good luck and keep us posted.
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