Originally Posted by Bo2020
Ok, I checked the brown wire, and it had fire. So what now?
I hope you mean by fire that you have 12VDC+ at the pin connector which attaches to the circuit board.
Clean the contacts on the connector block and on the circuit board with an eraser from a pencil. Check the green ground wire from the circuit board and again clean the point where it mounts to the water heater.
If you do have 12VDC+ at the circuit board and a good ground then the next step would be to confrim that the circuit board is sending 12VDC+ to the gas valve. Check for this right at the gas valve on the red wire.