I don't want to offend you, but have you set both zones? Assuming it was factory installed, the thermostat has two different cooling zones, so you can set the thermostat differently. My understanding is some of the second A/C units not installed by the factory have a separate control on the unit and the thermostat does not affect those. Keep us posted, as we ordered the second A/C from the factory on our new Big Sky.
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Ron and Terrie Ames plus Meg - MOC #1920/KF0NTA
2021Montana 3230CK Super Solar+ Legacy Package
2021 Ram 3500 Laramie Longhorn, BIM Charging
4x4, SRW, LB, Crew Cab, Pullrite 3900 Hitch
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