I'm an old timer that didn't read the instructions that came with the replacement water heater I installed and I think I broke it. It's a Rheem FVIR and I covered the intake grids with a water heater blanket. I didn't say I was smart, just old. Apparently I've tripped the internal "combustion saftey system" and even after clearing away the blanket I can't get the burner to stay lit. Is there anyway to "reset" the saftey system or I'm I goosed. Thanks for any help.