In our rig, similar to yours, the bedroom thermostat ONLY controls the bedroom A/C unit and can only cool regardless of the other settings on the t'stat. When it is on, there is conditioned air coming out ALL of the ceiling vents. The living area t'stat controls A/C, heat pump or furnace, but only, one at a time. You can have the living area furnace blowing heat at the same time as the bedroom A/C is blowing cold.
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Gary and Sandra
Edmonton, Alberta, Canada
2015 GMC Sierra 2500HD
2018 Montana 3120RL
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