"Failed to build fen srf" in importIdf




I am doing a simulation to evaluate the impact from EC-windows on UDI and the use of energy for heating and cooling in a building.

When I try to import the idf-file to check my geometry before the EP-simulation I get the message shown in the picture below from the idf-importer.

I have tried to generate the window with the ratio based window creater and tried another climate file. I have also tried the runEPSimulation-component.

Is there anybody who knows what to do?



There is no way to say what’s going on without seeing your model! My best guess is that you have a window that touches the edge of the parent surface.


I’m facing the same problem. The windows are not touching the edges.
Please have a look.

I’m a new user, the system does not let me
to upload files so please use this link.