Re: [TRNSYS-users] Unusually slow run time

[Fred Betz <fbetz@aeieng.com>]

I have solved the run time error through a combination of things that I won't go into here, but I have new warning, and I am not sure how significant it is. 

For 50% of the time steps I get a "Fan Mass Balance" warning. 

However, the 2 fans are on open loops. 

1 fan is pulling in outside air from the weather file, going through its coils, and then exhausts it. 

The 2nd fan is similar, it gets temp and RH from a fictitious space (an equation), goes through a coil, and exhausts it to atmosphere. 

There isn't something like the "water draw" that you could use to pull air from an infinite resource is there?

Fred