Ha_carrier: identify system status ("heating"/"cooling" vs. "idle")

Using the ha_carrier integration, and so far I am very happy with it. One thing I just can’t seem to be able to figure out, however, is what is the relevant entity that tells me when my Carrier HVAC is currently active (heating or cooling) as opposed to merely idle. Anyone?

In short, I need to write an automation that triggers some actions based on whether the HVAC is currently active or not.

Can anyone help please?