New to using APU.

Hello all. This is the first trk I have had with APU. The model is a 2020 KW T680. When the trk is turned ON A/C in the bunk only blows from P/S vents. When trk is turned OFF and APU is running A/C only blows from the D/S vents. Is this normal, is there some way to change this, or is this just the way it is?? Thanks in advance for your time and concern.

 

I believe that the way it should work

 

Ok thanks

 

turn key to the left and have all vents blowing. better noise damper and better air flow

 

I was always my experience the vents used by the APU AC were always in the sleeper. I always had plenty of air!

 

I don't know what is meant by P/S vents and D/S vents. The APU only blows cold air into the sleeper. When parked, turn off the truck's dashboard air conditioning system or you will just be filling the truck with hot/moist air.

 

I think P/S vents and D/S vents are shorthand for Passenger Side and Driver Side!