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Severe error [ZoneHVAC:EquipmentList] - Failed to match against any enum values

asked 2019-04-06 14:50:09 -0500

kc8301s gravatar image

updated 2019-04-07 06:20:20 -0500

Hello, right now I have been given a .idf file (written by another university student) so that I can start working on my thesis. It was supposed to be working but somehow I got a severe error when I run the simulation. The version of both the .idf file and my installed EnergyPlus is the same (8.9).

Here is what is shown on the .err file that I got after running the simulation.

Program Version,EnergyPlus, Version 8.9.0-40101eaafd, YMD=2019.04.06 20:32,
   ** Severe  ** <root>[ZoneHVAC:EquipmentList][Thermal Zone: Bad Equipment List][equipment][0][zone_equipment_object_type] - "Zone HVAC Baseboard Radiant Convective Electric" - Failed to match against any enum values.
   **  Fatal  ** Errors occurred on processing input file. Preceding condition(s) cause termination.
   ...Summary of Errors that led to program termination:
   ..... Reference severe error count=1
   ..... Last severe error=<root>[ZoneHVAC:EquipmentList][Thermal Zone: Bad Equipment List][equipment][0][zone_equipment_object_type] - "Zone HVAC Baseboard Radiant Convective Electric" - Failed to match against any enum values.
   ************* Warning:  Node connection errors not checked - most system input has not been read (see previous warning).
   ************* Fatal error -- final processing.  Program exited before simulations began.  See previous error messages.
   ************* EnergyPlus Warmup Error Summary. During Warmup: 0 Warning; 0 Severe Errors.
   ************* EnergyPlus Sizing Error Summary. During Sizing: 0 Warning; 0 Severe Errors.
   ************* EnergyPlus Terminated--Fatal Error Detected. 0 Warning; 1 Severe Errors; Elapsed Time=00hr 00min  0.24sec

A few things that I do not understand. What is being failed to match against any enum values? And when this 'Severe' error is found, does this count/create the 'Fatal' error and end the simulation?

Here is one part of the Texteditor of the .idf file that the error mentioned.

ZoneHVAC:EquipmentList,
    Thermal Zone: Bad Equipment List,  !- Name
    ZoneHVAC:Baseboard:RadiantConvective:Electric,  !- Zone Equipment 1 Object Type
    Zone HVAC Baseboard Radiant Convective Electric,  !- Zone Equipment 1 Name
    1,                       !- Zone Equipment 1 Cooling Sequence
    1;                       !- Zone Equipment 1 Heating or No-Load Sequence

Can I kindly ask you to explain to me what the problem could be and a solution? I am new to EnergyPlus and Openstudio so I do not have a lot of knowledge about the programs. It would also be very helpful if you could recommend to me where I can study more about EnergyPlus. I am also new to this website and this is my first post so if I post anything wrong please correct me.

Thank you in advance.

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answered 2019-04-07 06:28:18 -0500

updated 2019-04-07 06:31:45 -0500

I don't know how you got in this state, but if you look at the EnergyPlus v8.9 inputs for the ZoneHVAC:EquipmentList object, you'll see that there is a field "Load Distribution Scheme" that is missing from your object. So all of your field inputs are off by 1 and making EnergyPlus confused. (Specifically, EnergyPlus is reading "Zone HVAC Baseboard Radiant Convective Electric" as the object type instead of "ZoneHVAC:Baseboard:RadiantConvective:Electric".

Try this instead:

ZoneHVAC:EquipmentList,
    Thermal Zone: Bad Equipment List,  !- Name
    SequentialLoad,  !- Load Distribution Scheme
    ZoneHVAC:Baseboard:RadiantConvective:Electric,  !- Zone Equipment 1 Object Type
    Zone HVAC Baseboard Radiant Convective Electric,  !- Zone Equipment 1 Name
    1,                       !- Zone Equipment 1 Cooling Sequence
    1;                       !- Zone Equipment 1 Heating or No-Load Sequence

Is it possible that you got an EnergyPlus IDF file from a previous version of EnergyPlus, before this field was added, and simply changed the version number? As inputs to objects may change between releases, you should really use the IDFVersionUpdater to upgrade your IDF files to newer versions.

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I believe it was given to me in the form of a previous version. I will look into the IDFVersionUpdater. Your solution has solved the problem, thank you!

kc8301s gravatar image kc8301s  ( 2019-04-11 03:39:05 -0500 )edit

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Asked: 2019-04-06 14:50:09 -0500

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Last updated: Apr 07 '19