Dometic's rationale for some of their designs always mystifies me. Things like the LAC switch leaving an interion light on.....really now. One would think that a company with the engineering expertise and size of Dometic could think of a better system.......
And speaking of the interior light......I had 2 service calls last year that related to high interior temps in the fridge. The freezer section was fine....but the fridge would not go below 45-50* on either LP or 120VAC.
After doing all of the usual checks, I put a photocell in the interior and closed the door. GUESS WHAT.......that little light would stay on with the door closed and the small amount of heat would not allow the fridge to cool properly.
Fixed the door switch contact and BINGO......no more cooling problems!