[EnergyPlus_Support] HVAC loop convergence exceeded...

["aymericnovel" <aymericnovel@xxxxxxxxx>]

Good morning,

I have a chilled water loop with 4 chillers in parallel. Each branch 
has a variable speed water pump. The whole water loop is meant to 
perform with variable water flow to adapt to the load.

It looks like it works. Still, the simulation takes a lot of time 
and "HVAC loop maximum iteration exceeded" error message occurs a lot. 
I am pretty sure it is the mass flow balance that does not converge but 
I do not find a solution to solve this.

Does anyone see what would be the trick? (where is convergence criteria 
of massflow by the way?)

Thank you,
Aymeric


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