Problem with Carrier Ultra XTC

I just got into the reefer scene about a month now, bought a 2006 3000R with a Carrier Ultra XTC, its an ex Marten trailer. I noticed that I don't hit the set temp on continuous mode, only on start and stop. Same thing loaded or empty. Has anyone experienced this before or knows what I need to do to get this corrected? Any input will be greatly appreciated.

Continuous - This is the lowest box temp I will get on 36 degrees


Start/Stop


Now when it hits 36 box temp on Start/Stop and shuts off and I change it back to Continuous, it'll go into heat mode and go back up to a box temp of 39-40 box temp.

 

I saw something about that before, the different modes A,B,C...I'll have to check that out in the morning. I'm pretty sure this is what has to be adjusted. Thanks for the quick info!

 

Oo that makes sense too. I haul produce so I wouldn't want that to freeze on me.

 

Changed it 0, hit 36 on continuous! Thanks for the help

 

I know that, was just trying to figure out why the unit only hit temp in that mode and not continuous. But it's good to go now that I changed the parameters.