OK, you didn't mention what model Flair you have, but we have a 33R and the converter is located under the refer. There is a grill at floor level that you remove, and a wood panel just above it that should be removed to have better access to the converter. It will be screwed to the floor. There should be enough wire to remove it to disconnect the battery wires on the back side. I would recommend removing both battery cables at the batteries before messing with the converter.
2004 Flair 33R, 336 watts solar, Dometic Sidewise frig. Pan hard bars, front and rear, CHF, Timbrens front and rear, Roadmaster reflex steering dampener. Doug Thorley Tri-y headers, small tune.