<div dir="ltr"><div><br></div><div>Dear Mehrdad,</div><div><br></div><div>you better use some thermostat control (like types 108 or 698...you could also use type 2) to determine the heat pump status, instead than a condition based on instant temperatures set in an equation block. You need some dead band for your controller, otherwise the model will crash. Hope it helps, best regards</div><div><br></div><div>Angel<br></div></div><div class="gmail_extra"><br><div class="gmail_quote">2018-08-09 9:20 GMT+02:00 Mehrdad Vojdani via TRNSYS-users <span dir="ltr"><<a href="mailto:trnsys-users@lists.onebuilding.org" target="_blank">trnsys-users@lists.onebuilding.org</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Dear TRNSYS users,<div><br></div><div>I have a problem with controlling type 665 (split heat pump). As you may know, this type uses catalogue data to interpolate and find the right outputs. In the case of extrapolating, a warning will occur. The type would return minimum or maximum output. </div><div>When I set the control signal for the type (Cooling signal or Heating signal) MANUALLY to 1 and ran the simulation, no error or warning occurred. </div><div>But when I try to control the type with some equations, too much warning and finally an error...</div><div>I used the equations to set some sort of seasonal thermostat.</div><div>I will attach my file (*.tpf *.bui *.tm2). </div><div><br></div><div>Thanks for your help.</div><span class="HOEnZb"><font color="#888888"><div><br></div><div>Mehrdad <br></div></font></span></div>
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