Depends on where you are. Under normal conditions, it will shut off when the temperature in the RV is around the set point on the thermostat. If you are in Phoenix in July, it will likely never shut off if the thermostat is set to less than 75.
Hi Flybob I have a Atwood Air Command with the heatpump unit this came on the 2015 Fr3 30d, the blower has 3 speeds and is very quiet. I had a Dometic on my travel trailer and the blower would shut off when in auto mode once the temp was met. This unit on auto mode will only drop down to low blower & cycle the compressor.
Fan Auto mode is the trick.
I found out after hearing the fan run all night that I had hit fan "lo" before setting the A/C temp desired on my 2015 Surveyor Cadet. Fan / Heat / Cool (A/C) are different functions on the control. Check all before turning the lights off for the night.