SEVERE: Too many fields were found for the object: Chiller:Electric:EIR
I'm pretty new to OpenStudio and when I'm running the simulation I get this notification:
Program Version,EnergyPlus, Version 24.2.0-94a887817b, YMD=2025.07.22 12:53,
** Severe ** Output:PreprocessorMessage="ExpandObjects" has the following Fatal conditions:
** ~~~ ** SEVERE: Too many fields were found for the object: Chiller:Electric:EIR
** ~~~ **
** ~~~ ** Number expected=[30]
** ~~~ ** Number found=[40]
** Fatal ** Preprocessor condition(s) cause termination.
I saw some similar problems in other posts but they all said fixed and I could never find how to fix it myself. Any idea how to fix it?
Another issue I'm having is:
** Severe ** GetHTSubSurfaceData: Surface Openings have too much area for base surface=FACE 4540
** ~~~ ** Opening Surface creating error=FACE 4544
To my best understanding, this is occurring since open studio is choosing the wrong wall for the fenestration. In this case, the floor is comprised of short height attic space adjacent to a wall that has windows above the attic but OpenStudio is assigning the windows to the attic space. Not sure how to fix this either.
Any help would be welcome!
I was under the impression that OpenStudio only generated HVACTemplate objects when selecting Turn On Ideal Loads for zones (see here). Not sure how one gets a Chiller:Electric:EIR (to expand) when using OpenStudio. Could you share your .osm (e.g. public Google Drive)?
For the base vs sub area mismatch error, hard to pinpoint a fix without the .osm file.
I do have some rooms with the tag selected. Should I remove them and then it will work?
Hard to tell. It's perfectly legit in the early modelling stages to Turn On Ideal Loads and run a simulation to diagnose model geometry issues, for instance. I don't think I've ever ran a model with some zones with HVAC and others under ideal loads. Maybe make a copy of your model, strip away any HVAC from zones, turn on ideal loads for all zones, and run a 1-day simulation.
Gotcha, I'll try that. Thanks!