** Severe  ** SetOutBulbTempAt: Surface Outdoor Temperatures < -100 C
  **  ~~~  ** ...check Surface Heights - Maximum Surface Height=[20941].
It is a fairly large model with around 2,200 surfaces and I tried looking at the Z coordinate values for the surfaces by sampling and do not see anything off as yet.
Has anyone else encountered this error previously? Please let me know about it.
Thanks