Re: [EnergyPlus_Support] Strange Sort of Error

[Linda Lawrie <linda@xxxxxxxxxx>]

We have run across the error before.  I hope you are seeing it as well:

Program Version,EnergyPlus 1.2.1.022, 4/11/2005 4:22 PM,IDD_Version 1.2.1.022
    ** Warning ** Sum of area times inside solar abs for all surfaces is 
zero in Zone: ZONE NORTH
    ** Severe  ** View factors not complete. Probably bad surface 
descriptions in zone="ZONE NORTH".
    **   ~~~   ** Enforced reciprocity has tolerance (ideal is 0.0)=NaN
    **   ~~~   ** Enforced value is not within normal convergence tolerance 
(<.0001).
<snipped>
    **  Fatal  ** Singular matrix in LUdecomposition, window calculations

But specifically, what I think is happening here is the 
GeometryTransform.  I just found a bug in the compilation for V1.2.1 
release.  If you comment that out for now, you'll get onto the problem that 
I'm now seeing in the V1.2.2 release (namely a reference point is too close 
for daylighting).

That should keep you moving forward.  We plan on the V1.2.2 release on 
April 22.

>

Linda

EnergyPlus WebSite: http://www.energyplus.gov
Owner: EnergyPlus_Support list
Member: EnergyPlus Development Team



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