I am modelling a building with natural ventilation, where the window openings for one of the floors are controlled by an EMS script depending on CO2 and temperature. In order to apply the script, I need to have calculated natural ventilation.

I am able to get reasonable results and no errors when running the simulation on Design Builder. However, after exporting it to an IDF file to run the simulation directly on Energy Plus (I need to do that to see the resulting CO2 concentration output), I get severe errors on the convection coefficients for the partition holes in the floor where I am applying the script:

** Severe  ** GetUserConvectionCoefficients: SurfaceProperty:ConvectionCoefficients, illegal value for Surface Name=2ND:T10_PARTITION_8_0_0_0_0_0_HOLE

Here is the extract from the IDF file, where it is specified the convection coefficient for that hole. I have not written it manually, so it has the fields and values given by Design Builder:

  SurfaceProperty:ConvectionCoefficients,
    2nd:T10_Partition_8_0_0_0_0_0_Hole,  !- Surface Name
    Outside,                 !- Convection Coefficient 1 Location
    Value,                   !- Convection Coefficient 1 Type
    .1,                      !- Convection Coefficient 1 {W/m2-K}
    ,                        !- Convection Coefficient 1 Schedule Name
    ,                        !- Convection Coefficient 1 User Curve Name
    Inside,                  !- Convection Coefficient 2 Location
    Value,                   !- Convection Coefficient 2 Type
    .1,                      !- Convection Coefficient 2 {W/m2-K}
    ,                        !- Convection Coefficient 2 Schedule Name
    ;                        !- Convection Coefficient 2 User Curve Name