Transition to v24.1 crashes in the HX transition if there are blank effectiveness fields

[mjwitte]

Issue overview

Got a crash transitioning a user file from 23.2 to 24.1.

It's failing on this line in the source:
READ(HxEffectAt75Airflow(i), *) effect75

The incoming HX objects look like this:

HeatExchanger:AirToAir:SensibleAndLatent,
    VMC_1_HEX,               !- Name
    Heat_Recovery_Availability,  !- Availability Schedule Name
    0.305,                   !- Nominal Supply Air Flow Rate {m3/s}
    0.75,                    !- Sensible Effectiveness at 100% Heating Air Flow {dimensionless}
    ,                        !- Latent Effectiveness at 100% Heating Air Flow {dimensionless}
    0.75,                    !- Sensible Effectiveness at 75% Heating Air Flow {dimensionless}
    ,                        !- Latent Effectiveness at 75% Heating Air Flow {dimensionless}
    0.75,                    !- Sensible Effectiveness at 100% Cooling Air Flow {dimensionless}
    ,                        !- Latent Effectiveness at 100% Cooling Air Flow {dimensionless}
    0.75,                    !- Sensible Effectiveness at 75% Cooling Air Flow {dimensionless}
    ,                        !- Latent Effectiveness at 75% Cooling Air Flow {dimensionless}

Workaround

Fill in the default value of 0.0 in the blank HX effectiveness fields in the incoming v23.2 file.

Details

Some additional details for this issue (if relevant):

• Platform Win11
• Version of EnergyPlus 24.1
• Helpdesk ticket number 16730

Checklist

Add to this list or remove from it as applicable. This is a simple templated set of guidelines.

• Defect file added in EnergyPlusDevSupport\DefectFiles
• Ticket added to EnergyPlus Defect Complexity (Github Project)
• Pull request created (the pull request will have additional tasks related to reviewing changes that fix this defect)