Compatability exploration

[TimPasquini]

I'd like to see if I can get this working with my older windfree units. I have a setup that is a single indoor and single outdoor unit, and then another that is 4 indoor heads to a larger outdoor unit. For simplicity I think I'd start with the 1:1 setup before exploring the others.

I believe I found the correct technical manual here. The model is an AR09TSFACWKX & AR09TSFACWKX which appear to be 2020 models.

There are some diagrams on page 24 and 25 of the various modules and wiring. I appear to have F1 & F2 wires.

In the compatibility checker, these models are listed as "Other" but I'm unclear if that means it's just unconfirmed or if it means it's some separate unknown protocol?

Before I order the hardware to start trying this, I was hoping someone might have some insight into probability of success.