[EnergyPlus_Support] SimHVAC: Maximum iterations (30) exceeded for all HVAC loops

[´«Ëµ °¢Áú¸ç <aloongge@xxxxxxxx>]

Hello, Thank you for your reply. I have some new questions. When I run the model for the whole year simulation, some warnings occured, and repeat many times. One of the warnings is listed below:

** Warning ** SimHVAC: Maximum iterations (30) exceeded for all HVAC loops, at WHOLE YEAR, 02/12 12:21 - 12:24
   **   ~~~   ** SimFlags=[TFFFFFFF] AirLoops[T],ZoneEq[F],NonZoneEq[F],PlantLoops[F],CondLoops[F],ElecCircuits[F],PlantDemandLoops[F],CondDemandLoops[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=[191 - OFF VAV SYS9 RETURN AIR 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=[190 - OFF VAV SYS8 RETURN AIR 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=[189 - OFF VAV SYS7 RETURN AIR 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=[188 - OFF VAV SYS6 RETURN AIR 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=[187 - OFF VAV SYS5 RETURN AIR 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=[98 - CHILLED WATER LOOP CNDW DEMAND OUTLET2]
   **   ~~~   ** 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=[86 - CHILLED WATER LOOP CNDW DEMAND OUTLET1]
   **   ~~~   ** 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=[93 - CHILLED WATER LOOP CNDW DEMAND INLET2]
   **   ~~~   ** 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=[81 - CHILLED WATER LOOP CNDW DEMAND INLET1]
   **   ~~~   ** 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=[98 - CHILLED WATER LOOP CNDW DEMAND OUTLET2]
   **   ~~~   ** Plant Flow Tolerance Values, Most Recent listed first
   **   ~~~   ** PlantFlowFlowTol=0.000
   **   ~~~   ** PlantFlowFlowTol=0.000
   **   ~~~   ** PlantFlowFlowTol=0.000
   **   ~~~   ** PlantFlowFlowTol=0.000
   **   ~~~   ** PlantFlowFlowTol=0.000

 

You can see more information from the attachment. I wonder why these occured. Thank you!

 

loong

__._,_.___

Primary EnergyPlus support is found at:
http://energyplus.helpserve.com or send a message to energyplus-support@xxxxxxxx

The primary EnergyPlus web site is found at:
http://www.energyplus.gov

The group web site is:
http://groups.yahoo.com/group/EnergyPlus_Support/

Attachments are currently allowed but be mindful that not everyone has a high speed connection.  Limit attachments to small files.

EnergyPlus Documentation is searchable.  Open EPlusMainMenu.pdf under the Documentation link and press the "search" button.

Your email settings: Individual Email|Traditional
Change settings via the Web (Yahoo! ID required)
Change settings via email: Switch delivery to Daily Digest | Switch to Fully Featured
Visit Your Group | Yahoo! Groups Terms of Use | Unsubscribe

__,_._,___

Attachment not found:
d:\eudora\attach\6.0.0370.err

Attachment not found:
d:\eudora\attach\6.0.0.037.idf