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I am simulating a building in EnergyPlus 9.1 with 428 conditioned zones. Out of these, 154 zones are using HVAC Template:Zone:VAV, and 274 are using HVACTemplate:Zone:Fancoil. When I start the simulation, it gets stuck at 'Initializing New Environment Parameters - Warming up {1},' and the simulation remains stalled for hours, nearly 24 hours. I conducted a test by removing the 274 zones that use HVACTemplate:Zone:Fancoil, and the simulation ran smoothly. It seems that when running the simulation with the 274 zones using HVACTemplate:Zone:Fancoil, the same issue arises with it getting stuck at 'Initializing New Environment Parameters - Warming up {1}. I would like to know if HVACTemplate:Zone:Fancoil has any limitations when used in simulations with a large number of zones, or if it could be an issue related to the configuration of some parameter.

Thanks

I am simulating a building in EnergyPlus 9.1 with 428 conditioned zones. Out of these, 154 zones are using HVAC Template:Zone:VAV, and 274 are using HVACTemplate:Zone:Fancoil. When I start the simulation, it gets stuck at 'Initializing New Environment Parameters - Warming up {1},' and the simulation remains stalled for hours, nearly 24 hours. I conducted a test by removing the 274 zones that use HVACTemplate:Zone:Fancoil, and the simulation ran smoothly. It seems that when running the simulation with the 274 zones using HVACTemplate:Zone:Fancoil, the same issue arises with it getting stuck at 'Initializing New Environment Parameters - Warming up {1}. I would like to know if HVACTemplate:Zone:Fancoil has any limitations when used in simulations with a large number of zones, or if it could be an issue related to the configuration of some parameter.

Thanks