eQuest Crash

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Dear All,

What does it mean when eQuest just freezes during a simulation (always during HVAC simulation).

Also, people have suggested before that the SIM file be reviewed for any error messages after a crash. I cannot open the SIM file after such a freeze. The opener will just not work. Is there another way to see the SIM file?

Thanks,

?mer Moltay, LEED AP

Omer Moltay's picture
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I have seen this as well -- the file will consistently just stop on one
particular day during the HVAC run. Embarrassingly, I cannot remember the
fix -- hopefully something is written in the .sim to direct you where to
look.

You can open the .sim file with any text file editor including NotePad or
WordPad. D2SimViewer is just a text editor which recognized the DOE
reports. (Works on 2.1e files as well!)

bfountain's picture
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Sometimes it means you have a zero value in your input, which causes a divide by zero error in the simulation.

Doug Maddox

The Weidt Group

Doug Maddox's picture
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I have found that this is usually a cause of a missing component or something that was improperly referenced. It could be a thermal zone that is missing or a PSZ having an unconditioned zone as the control zone. Last week it was custom geothermal field that I didn't define properly.

I have only fixed these through trail and error, looking for items in the air-side or water-side HVAC that would cause the crash. I have found that it is not something that is undersized but rather a component not being where it should be. I have never found a file that would report the problem.

Regards,

Jordan Bouchard, EIT, LEED? AP

Bouchard, Jordan's picture
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You could try looking in your .bdl file for clues. It's in your Project
files. Mine opens in word and I just do and edit, find, error to get to the
lines that are causing problems. It's a good place to start.

Carol

2010/2/11 ?mer Moltay

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