Bought 2720SL 2006 and water heater won't turn on

So the water heater I can get working over propane but not over electricity. Basically all I have done is

fill up the hot water tank (turn on hot water until it's done sputtering)

going to the outside of the TM, opening the hatch and putting it to "on" the little switch on the bottom left hiding behind the valve. However it won't work. Any troubleshooting tips? I hope it's not burnt out!