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[EnergyPlus_Support] Re: SimHVAC: Maximum iterations (200) exceeded



I have found a discussion in which the same problem was discussed:
http://tech.groups.yahoo.com/group/EnergyPlus_Support/message/11913
In my case the problem is in AirLoops and in ZoneEq, but no idea why.


--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "FrancescoP" <direzionecontraria@...> wrote:
>
> Hello
> I have the following warning. As you can see, I increased the maximum iterations but without success. Is it an important problem?
> 
>    ** Warning ** SimHVAC: Maximum iterations (200) exceeded for all HVAC loops, at SPINIGARDOLO, 01/01 06:00 - 06:02
>    **   ~~~   ** SimFlags=[TTFFF] AirLoops[T],ZoneEq[T],NonZoneEq[F],PlantLoops[F],ElecCircuits[F]..F=ok,T=fail
>    **   ~~~   ** HVAC Tolerance Flags=[0000000] Enthalpy[0],MassFlow[0],HumRat[0],Pressure[0],FlowQual[0],Energy[0],Temp[0]..0=ok,1=fail
>    **   ~~~   ** HVAC Tolerance Values, Most Recent listed first
>    **   ~~~   ** HVAC EnthalpyTol=0.000, MassFlowTol=0.000, HumRatTol=0.0000, PressureTol=0
>    **   ~~~   **      FlowQualTol=0.00, EnergyTol=0.000, TempTol=0.00
>    **   ~~~   ** HVAC side outlet node=[252 - LORAN CTL02 DEMAND SIDE OUTLET]
>    **   ~~~   ** HVAC EnthalpyTol=0.000, MassFlowTol=0.000, HumRatTol=0.0000, PressureTol=0
>    **   ~~~   **      FlowQualTol=0.00, EnergyTol=0.000, TempTol=0.00
>    **   ~~~   ** HVAC side outlet node=[2 - LORAN CTL02 SUPPLY SIDE OUTLET 1]
>    **   ~~~   ** HVAC EnthalpyTol=0.000, MassFlowTol=0.000, HumRatTol=0.0000, PressureTol=0
>    **   ~~~   **      FlowQualTol=0.00, EnergyTol=0.000, TempTol=0.00
>    **   ~~~   ** HVAC side outlet node=[252 - LORAN CTL02 DEMAND SIDE OUTLET]
>    **   ~~~   ** HVAC EnthalpyTol=0.000, MassFlowTol=0.000, HumRatTol=0.0000, PressureTol=0
>    **   ~~~   **      FlowQualTol=0.00, EnergyTol=0.000, TempTol=0.00
>    **   ~~~   ** HVAC side outlet node=[2 - LORAN CTL02 SUPPLY SIDE OUTLET 1]
>    **   ~~~   ** HVAC EnthalpyTol=0.000, MassFlowTol=0.000, HumRatTol=0.0000, PressureTol=0
>    **   ~~~   **      FlowQualTol=0.00, EnergyTol=0.000, TempTol=0.00
>    **   ~~~   ** HVAC side outlet node=[252 - LORAN CTL02 DEMAND SIDE OUTLET]
>    **   ~~~   ** Plant Tolerance Flags=[00000000] Enthalpy[0],MassFlow[0],HumRat[0],Pressure[0],FlowQual[0],Energy[0],Temp[0],PlantFlowMassFlow[0]..0=ok,1=fail
>    **   ~~~   ** Plant Tolerance Values, Most Recent listed first
>    **   ~~~   ** Plant EnthalpyTol=0.000, MassFlowTol=0.000, HumRatTol=0.0000, PressureTol=0
>    **   ~~~   **      FlowQualTol=0.00, EnergyTol=0.000, TempTol=0.00
>    **   ~~~   ** Plant side outlet node=[166 - CONDENSER LOOP SUPPLY SIDE OUTLET]
>    **   ~~~   ** Plant EnthalpyTol=0.000, MassFlowTol=0.000, HumRatTol=0.0000, PressureTol=0
>    **   ~~~   **      FlowQualTol=0.00, EnergyTol=0.000, TempTol=0.00
>    **   ~~~   ** Plant side outlet node=[158 - CONDENSER LOOP DEMAND SIDE OUTLET]
>    **   ~~~   ** Plant EnthalpyTol=0.000, MassFlowTol=0.000, HumRatTol=0.0000, PressureTol=0
>    **   ~~~   **      FlowQualTol=0.00, EnergyTol=0.000, TempTol=0.00
>    **   ~~~   ** Plant side outlet node=[37 - STORAGE TANK SOURCE LOOP OUTLET NODE]
>    **   ~~~   ** Plant EnthalpyTol=0.000, MassFlowTol=6.477E-008, HumRatTol=0.0000, PressureTol=0
>    **   ~~~   **      FlowQualTol=0.00, EnergyTol=-1.011E-002, TempTol=0.00
>    **   ~~~   ** Plant side outlet node=[35 - INSTANTANEOUS WATER HEATER OUTLET NODE]
>    **   ~~~   ** Plant EnthalpyTol=0.000, MassFlowTol=0.000, HumRatTol=0.0000, PressureTol=0
>    **   ~~~   **      FlowQualTol=0.00, EnergyTol=0.000, TempTol=0.00
>    **   ~~~   ** Plant side outlet node=[150 - CHW LOOP SUPPLY SIDE OUTLET]
>    **   ~~~   ** Plant Flow Tolerance Values, Most Recent listed first
>



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