Can change results
Improvements to fan-curve and cooling-capacity control
A cooling unit defined by a fan curve now moves toward its operating point gradually as the solve runs, and a unit in cooling-capacity mode adjusts its supply temperature in smaller steps. We fixed an issue where rooms cooled by fan-curve units in cooling-capacity mode could fail to converge, and an issue where a room already below its set point could be cooled harder. These models now solve more reliably. Results for rooms with fan-curve or cooling-capacity units can differ from earlier runs.
When a solve becomes unstable late in the run, it is now started again once with the other solver method before the job stops. If the solve had already met the convergence check several times in a row before it became unstable, that converged solution is delivered rather than lost. Solves that stay stable run exactly as they did on the release before.
A model with a duct that has no diffuser is now stopped before meshing, rather than running and failing later in the job.