Hi John,

It?s my recollection that ?converting? a project developed under doe 2.2 to cleanly operate under doe 2.3 is a potentially very tricky/complex process, to the point it may be most time efficient to simply ?start over? under the intended engine. I had to make that hard call a couple times upon learning a desired/needed feature was only available under one engine or the other.

If the baseline run (before parametrics) completes without apparent error or odd results, then you might be lucky enough to just need to scrap and re-define the parametric runs themselves.

If the baseline run is not completing, here are a couple things to try if you want to invest in resuscitating the ?converted? model:

* You might start by scanning your (working) 2.2 INP file for any input expressions using the #SI operator. I?ve attached a prior thread from circa 2017 where I explained the advent of #SI --> #SIT with doe 2.3, which ?broke? a number of expressions I was used to copy/pasting forward from other models. In doe 2.3, you will need to insert a fourth argument to get the same operator working as intended.
* Note certain system types that were working/available in doe 2.2 were/are not supported in 2.3 (notably, SUM systems were not working under doe 2.3 until the most recent doe2.3 version, IIRC). The help files and bugfix documentation at doe2.com provide some further clarity if you suspect this may be the case for your model.

* I recall a couple issues in ?upconverting? that were solved by punching in airflow and heating/cooling capacities, as certain autosizing routines for central coils and terminal boxes would throw errors in simulation.
* In other cases which appeared to throw system-specific errors, re-creating the system in the doe 2.3 model, then re-assigning all zones to the new system and deleting the old system is a ?fix? I recall employing

I hope some of this may be helpful. I?m a little rusty in the eQuest world but hope to continue contributing in the near/long term. This community certainly taught me a lot and I hope to continue giving back :-).

Happy new year!

~Nick

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Nick Caton, P.E. (US), BEMP
??? ????, P.E. (US), BEMP
Senior Energy Engineer
Energy Manager, Yokota Airbase
ESS - Energy & Sustainability Services
M JP
M US
Email
+81 . 070 . 3366 . 3317
+1 . 785 . 410 . 3317
nicholas.caton at se.com
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