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<p>Christophe,</p>
<p> I didn't look at the files. However, the two most common issues
are 1. to make sure that you have accounted correctly for the zone
thermal capacitance (the default value of the zone capacitance
accounts only for the thermal capacitance of the air in the zone,
not for any of the zone contents and furnishings). And 2. to make
sure that you are using a short time step (no more than 5 minutes)
so that the ERV can make control decisions on an appropriate time
scale.</p>
<p>kind regards,</p>
<p> David</p>
<p><br>
</p>
<br>
<div class="moz-cite-prefix">On 06/08/2017 05:04, Christophe
Plantier via TRNSYS-users wrote:<br>
</div>
<blockquote cite="mid:59392110.4070207@enertech.fr" type="cite">
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<p>Dear TRNSYS Users,</p>
<p>I have a convergence problem in studio which I cannot solve.
This warning occurs too many times : "TRNSYS Message 441 :
The inputs to the listed units have not converged at this
timestep. The values at the last iteration will be used and the
simulation will proceed. Reported information : UNITS: 56
15". I tried to delete all links with the BUI file and to
recreate them one by one and the error occurs when I link the
heat recovery ventilation. This a classic module that we use in
my company and this is the first time we have such a problem.</p>
<p>Could anybody help me ? I join the required files to run the
simulation.</p>
Thanks
<div class="moz-signature">-- <br>
<b><font face="Calibri"> Christophe PLANTIER </font></b><font
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<pre class="moz-signature" cols="72">--
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
22 North Carroll Street - suite 370
Madison, WI 53703 USA
P:+1.608.274.2577
F:+1.608.278.1475
<a class="moz-txt-link-abbreviated" href="mailto:d.bradley@tess-inc.com">d.bradley@tess-inc.com</a>
<a class="moz-txt-link-freetext" href="http://www.tess-inc.com">http://www.tess-inc.com</a>
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