Montana 3911 MS A/C question

[A McInerney]

We have a 2020 Montana 3911 MS with a dual air conditioning system. I thought the systems were separate of each other, but it seems the rear AC is ducted to the front also. Do the systems complement each other? Which one becomes the master?
We’ve been in the unit for six months now without any issues, but I had to turn the front unit off to get the rear unit to come on the other day. Any help would be greatly appreciated. Thank you in advance.

 

[scottz]

What kind of AC units and thermostats do you have?

On my unit (2017), it is a continuous duct fed by both AC units.

 

[foldbak]

We have a 2020 Montana 3911 MS with a dual air conditioning system. I thought the systems were separate of each other, but it seems the rear AC is ducted to the front also. Do the systems complement each other? Which one becomes the master?
We’ve been in the unit for six months now without any issues, but I had to turn the front unit off to get the rear unit to come on the other day. Any help would be greatly appreciated. Thank you in advance.

Unless prewire for a 3rd AC, you have a continuous raceway connecting the front and rear AC's. This allows the heat pump to reach the front of the rig.