A company installed my Victron Orion-tr smart 12/12-30 isolated along with a Battle Born and some stereo equipment under the seat of my Sprinter van. It never worked right, and I have had someone look at it twice. First time, he said it was installed backward. Worked for a day or so. Then no led lights. Second time, he found blown fuse on van battery. That worked except my Victron monitor did not work. Now....four days later... the green power led is blinking. I need HELP, PLEASE. Looking for a expert who can knock this worry off my shoulder.