[EnergyPlus_Support] Re: Cntroller input data problem.

["tjutw" <tjutw@xxxxxxxxx>]

Hi,
Thank you for your advice.

I have changed the sequence of heating coil and cooling coil. But I
still got the same wrong message.  

By the way, the file is expanded by COMPACT HVAC.  

Could anyone help me solve this problem? Thank you in advance.

Tj Ywh


--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "berlinclownfish"
<SPlamp@...> wrote:
>
> I've experienced the identical problem. The error relates to the 
> arrangement of the AHU cooling coil installed prior the AHU heating 
> coil. 
> 
> However, the arrangement in the AHU that I'm trying to model in fact 
> has a reversed setup. This also means the reverse arrangement of each 
> coil's controller in the class 'Air Distribution' under the 
> tab 'CONTROLLER LIST' to comply with the simulation order.
> 
> In addition, when manually changing (I presume both of you created 
> your input files with the help of a graphical interface) the order of 
> both coils, you'll also have to change the inlet and outlet nodes on 
> the remaining equipment (e.g. return fan, supply fan, etc.).
> 
> Regards,
> 
> Sandro
> 
> 
> --- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "tjutw" <tjutw@> wrote:
> >
> > Hi Everyone,
> > 
> > I also have the same problem.
> > 
> >  ** Severe  ** FindRootSimpleController: Controller error for
> > controller = VAV SYS 2 COOLING COIL CONTROLLER
> >    **   ~~~   **  Occurrence info=CALGARY INT'L AB CAN WYEC2-B-25110
> > WMO#=718770, 01/31 09:00 - 10:00
> >    **   ~~~   **   Controller function is inconsistent with user
> > specified controller action = Reverse action
> >    **   ~~~   **   Actuator will be set to maximum action
> >    **   ~~~   ** Controller control type=Temperature
> >    **   ~~~   ** Controller temperature set point = 17.20 [C]
> >    **   ~~~   ** Controller sensed temperature = 17.37 [C]
> >    **   ~~~   ** Controller actuator mass flow rate set to 5.71 
> [kg/s]
> >    **   ~~~   ** Controller actuator temperature = 7.00 [C]
> >    **   ~~~   **   Note: Chilled water coils should be reverse 
> action
> > and the entering chilled
> >    **   ~~~   **         water temperature (controller actuator
> > temperature) should be below the setpoint temperature
> >    **   ~~~   **   Note: Hot water coils should be normal action and
> > the entering hot
> >    **   ~~~   **         water temperature (controller actuator
> > temperature) should be above the setpoint temperature
> > 
> > 
> > I am also sure that the parameters for VAV SYS 2 COOLING COIL
> > CONTROLLER are right, because most of time the program can run
> > properly.  It seem many factors can affect this error message. For
> > example, if  I add more internal heat in rooms, then this error
> > message will not appear.  I found this just because I input the 
> wrong
> > values for internal heat.  
> > 
> > Tj Ywh
> > 
> > 
> > --- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "love9787m" <love9787m@>
> > wrote:
> > >
> > > ** Severe  ** FindRootSimpleController: Controller error for 
> > > controller = MAIN COOLING COIL CONTROLLER
> > > In the error message, Controller sensed temperature is 22288.16 
> [C].
> > > I've never seen before like this problem and sensed temperature 
> > > never reached this high temperature. 
> > > To find out the method, which part or object should I sheckand
> > > what is the reason for this problem?
> > >    
> > >  **   ~~~   **  Occurrence info=ULSAN - KOR IWEC DATA 
> WMO#=471520, 
> > > 07/03 05:40 - 05:41
> > >    **   ~~~   **   Controller function is inconsistent with user 
> > > specified controller action = Reverse action
> > >    **   ~~~   **   Actuator will be set to maximum action
> > >    **   ~~~   ** Controller control type=Temperature
> > >    **   ~~~   ** Controller temperature set point = 15.00 [C]
> > >    **   ~~~   ** Controller sensed temperature = 22288.16 [C]
> > >    **   ~~~   ** Controller actuator mass flow rate set to 1.10 
> > > [kg/s]
> > >    **   ~~~   ** Controller actuator temperature = -120.36 [C]
> > >    **   ~~~   **   Note: Chilled water coils should be reverse 
> > > action and the entering chilled
> > >    **   ~~~   **         water temperature (controller actuator 
> > > temperature) should be below the setpoint temperature
> > >    **   ~~~   **   Note: Hot water coils should be normal action 
> and 
> > > the entering hot
> > >    **   ~~~   **         water temperature (controller actuator 
> > > temperature) should be above the setpoint temperature
> > >    ** Warning ** Calculated Humidity Ratio Invalid 
> (PsyWFnTdbTwbPb)
> > > 
> > > Please let me know the reason and method.
> > > Thank you in advance.
> > >
> >
>




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