I didn't check out your model, but those errors are usually safe to ignore. It just means that there are some very small polygons being exported to the simulation, usually from a complicated architectural detail or a piece of furniture.
As always, if you are worried, run a visualization to make sure everything appears appropriate. The climate-based calculations get the same simulation model as it appears in the visualization.
I encountered the same warning. But this time a large area of model was not visualized. I am guessing this is because they are large delaunary mesh trimmed in rhino so that it is complicated to run. I wonder if you have any suggestions to fix this.