[EnergyPlus_Support] ** Severe ** Too many iterations (SOLVZP) in Airflow Network simulation

[<m.aldegheri@xxxxxxxxx>]

Hi all,
I have a problem with the processing of a idf.
The model have an AFN and it's a nat vent building.

E+ gives me this fatal error...

  ** Severe  ** Too many iterations (SOLVZP) in Airflow Network simulation
   ** Warning ** AirflowNetwork: SOLVER, Changing values for initialization flag, Relative airflow convergence, Absolute airflow convergence, Convergence acceleration limit or Maximum Iteration Number may solve the problem.
   **   ~~~   **  During Warmup & Sizing, Environment=SUMMER DESIGN DAY IN PALAZZINE ITEA GARDOLO, at Simulation time=07/15 10:30 - 11:00
   **   ~~~   ** ..Iterations=30000, Max allowed=30000
   **  Fatal  ** AirflowNetwork: SOLVER, The previous error causes termination.

At the moment in the idf is set:

!-   ===========  ALL OBJECTS IN CLASS: AIRFLOWNETWORK:SIMULATIONCONTROL ===========

AirflowNetwork:SimulationControl,
    VENT,                    !- Name
    MultizoneWithoutDistribution,  !- AirflowNetwork Control
    Input,                   !- Wind Pressure Coefficient Type
    Cp Data,                 !- AirflowNetwork Wind Pressure Coefficient Array Name
    OpeningHeight,           !- Height Selection for Local Wind Pressure Calculation
    LowRise,                 !- Building Type
    30000,                   !- Maximum Number of Iterations {dimensionless}
    ZeroNodePressures,       !- Initialization Type
    0.0001,                  !- Relative Airflow Convergence Tolerance {dimensionless}
    0.000001,                !- Absolute Airflow Convergence Tolerance {kg/s}
    -0.5,                    !- Convergence Acceleration Limit {dimensionless}
    ,                        !- Azimuth Angle of Long Axis of Building {deg}
    ;     &n

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