Thank you! I'll make sure to finish the game and leave good reviews once I'm done!
Not sure if you already figured it out, but there are 2 ways to get through the fuse puzzle (and also ~1 more route where you can just ignore the fuse part with the valves).
One straightforward setup would be that you would need to remove the fuses from the doors and/or lights to activate the elevator while the other way is that you can find the required fuses hidden around the area. I won't go into detail in case you don't want to be spoiled.