[TRNSYS-users] simulation running unstable/stops, NaN in output?

[Wouter Lumen]

Dear TRNSYS-users,

I have made my own component for modeling an ice-storage tank.
I can run this component in a simple simulation with few other components, and
it runs flawless. I have tested the component with a wide variety of  
input values and parameters, and it always works fine.

When I put this component in a more complicated simulation, I mostly  
get "invalid floating point errors". Also if i put out some component  
outputs through a printer in an excell-file, I get "NaN", sometimes a  
whole column full, sometimes just one NaN in between the normal values.

I have checked the input values for the component and non of them are  
out of range. I also have checked that the component order is as it  
should be.

Does anybody know where this NaN comes from and what it means?

Are there parameters that i can change in TRNSYS to make the  
simulation run more stable?

Thank you!

Kind Regards,

Wouter Lumen