If blowing hot air with heat pump, connect white wire to O/B on Nest to get compressor to kick in.

[Goehome]

Spoiler
Finally found the solution after searching all over the net.  Will have to do a factory reset and re-set-up thermostat after relocating the W wire to O/B.

[Goehome]

Replaced 2 Honeywell thermostats in house wire for wire (r, w, y, g, c) for the Nests.  Everything works, displays ok, Wifi connects, etc., except  the compressors at the heat pumps do not kick in when outside units/fans come on.  Therefore, the air handlers (in attic) just blow hot air.  Does the wiring configuration need to be switched or an additional power connection/jumper need to be added?

[Jake]

Hey Goehome,

Apologies for the late reply. I wanted to follow up and ensure you are good to go. Please let me know if you are still having any trouble from here, as I would be happy to take a closer look and assist you further. 

Best regards,
Jake

[Jake]

Hey Goehome,

I want to ensure you are good to go, and everything is working properly. Please let me know if you are still having trouble, as I will be locking the thread in 24 hours due to inactivity. 

Best regards,
Jake

[Goehome]

Good to go, thanks.

[GarrettDS]

Hey folks,
It looks like we have come to a solution so I'm going to be locking this thread. If you have any other concerns or questions, please feel free to create a new thread.

Have a great day.
Garrett DS