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Joynal,<br>
A MATH error is a generic Fortran message that is generated when
an illegal operation (such as trying to take the LOG of a negative
number) occurs in a piece of source code. Such errors should be
trapped by the source code (for example by checking the sign of the
argument before trying to take the log of that argument and
generating a clean error message then cleanly exiting the
subroutine) but such checks are not always made. The only way to
find out why the MATH error is being generated is to run the
simulation from the Fortran compiler/debugger. You can send the
project and all files needed to run it to your distributor for some
help with debugging it.<br>
Kind regards,<br>
David<br>
<br>
<br>
<div class="moz-cite-prefix">On 4/14/2014 09:05, Joynal Abedin
wrote:<br>
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<p class="MsoNormal">Dear TRNSYS users,<o:p></o:p></p>
<p class="MsoNormal">My model stops with MATH error half way
through when I run it with a time step greater than 2 minutes
but runs fine with 2min or less. I have tried varying the time
base in TYPE56. I am simulation an multi-zone building with
TYPE56 and HVAC systems using TYPE1231, TYPE114 pump, TYPE650
heat exchanger, TYPE24 integrators etc. etc.
<o:p></o:p></p>
<p class="MsoNormal">What could I be doing wrong.<o:p></o:p></p>
<p class="MsoNormal">Thanks for your help.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Kind regards,<o:p></o:p></p>
<p class="MsoNormal">Joynal Abedin.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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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>
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