The heater switch on the monitor panel is for the gas mode operation of the water heater. If the water heater is both gas and electric model, the other switch could be for the electric mode of operation for the water heater.
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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
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