CLose gas vavles on tank(s) and reopen slowly. REtry operation of water heater. If it does not change then you need to check the working gas pressure of the gas regulator. THis will require a monometer. If you cannot adjust the regulator to work at 10.5 to 11" water column you should replace the regulator.
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