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Deleting Design Days (DDY) from OpenStudio 1.9.0

I think I may have uncovered an OS bug and wanted to see if anyone else has observed the same issue.

My somewhat complex OS model seems to running fine with a number unimportant warnings and a few sizing errors. I WAS including 6 design days, but decided to remove them for computational time reasons.

Before removing DDYs image description

DropBox Link to *.err file

and after removing DDYs (using the checkboxes and red X delete button) image description

DropBox Link to *.err file

New errors are along the lines of

* Severe * IP: IDF line~37391 Object=CONTROLLER:MECHANICALVENTILATION, name=CONTROLLER MECHANICAL VENTILATION 3, Required Field=[Zone 1 Name] was blank.

and cause my model analysis to be...terminated image description

Deleting Design Days (DDY) from OpenStudio 1.9.0

I think I may have uncovered an OS bug and wanted to see if anyone else has observed the same issue.

My somewhat complex OS model seems to running fine with a number unimportant warnings and a few sizing errors. I WAS including 6 design days, but decided to remove them for computational time reasons.

Before removing DDYs image description

DropBox Link to *.err file

and after removing DDYs (using the checkboxes and red X delete button) image description

DropBox Link to *.err file

New errors are along the lines of

* Severe * IP: IDF line~37391 Object=CONTROLLER:MECHANICALVENTILATION, name=CONTROLLER MECHANICAL VENTILATION 3, Required Field=[Zone 1 Name] was blank.

and cause my model analysis to be...terminated image description