OK, so, I have several air loops, each with a two-stage DX Cooling Coil. I have auto-sized ALL parameters for this coil, EXCEPT for the low and high-Speed COP. They all seem to be sizing appropriately, but during a simulation, they all seem to remain off as the zone temperatures go up much beyond setpoint. Also, the electric power [W] and energy [J] reported for "Cooling" is tiny.

The only major difference to another model of this kind which ran successfully is that the "Rated Low Speed Air Flow Rate" for the two-stage DX Cooling Coil was NOT Autosized there, but selected for Hard Sized, but the field was then simply empty, i.e. did not even have a number in it.

So I am rerunning the model with that adjustment and cross my fingers it will perform. However, it would be nice if anyone had observed this behavior as well, or whether this is a known issue?