Here is my new system:
Furnace: 58PHA090-16 Furnace
Thermostat: Honeywell 8000 (Model TH8321U)
I was pitched this system as "enhanced humidity control" (I live in south Texas), and that this was achieved by the low-speed blower on the 58PHA working with the first stage compressor on the 24ACB7. But when the low speed blower is on (such as when the set point temperature is reached but the humidity is still high), the compressor is not. The outdoor unit only comes on when the blower is in high speed. The thermostat and 58PHA control board appear to be wired for two-stage cooling. I haven't looked at the wiring at the outside unit.
What am I failing to understand? What if any is the advantage of a two-stage compressor in this system?