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EMS program – AirTeminal:SingleDuct:UserDefined and ZoneAmbient

Have any of you used the “AirTerminal:SingleDuct:UserDefined” object before?

I need to use it as part of an EMS program and in particular the actuator called “Component Zone Internal Gain”. However, every time I set “Ambien Zone Name” in the “AirTerminal:SingleDuct:UserDefined” object, the simulation crashes (no err file is created).

Since I am not really experienced with EMS, I looked at the example file called “EMSUserDefined5ZoneAirCooled”. In this model, the “Ambient Zone Name” field of the “AirTerminal:SingleDuct:UserDefined” object is not set. I tried to set it to any of the zones and each time the simulation has crashed without creating an err file, just like in my model.

What am I missing?