FYI, I'm adding such diagnostics to OpenStudio in PR#4843 so soon you'll have native methods to detect and fix incorrectly oriented surfaces. You can try one of the installers linked in the comments if you want.

Otherwise, in sketchup, look at your Thermal Zone 1, and check which faces are dimmer/lighter color than the others, that'll tell you you're looking at the other side. In SketchUp: Double click the space to enter the space group, You can then select the face, it, right click click, and select 'Reverse Faces' (thanks @Eric Ringold)"Reverse/Flip vertices" (terminology might not be exact, I don't have sketchup on this Ubuntu machine)