Hey guys. I recently purchased a 2013 Wabash with a carrier 2500 unit . I used the unit for 2 weeks Haven't pulled any frozen loads with it as yet . I decided to test it. I left the unit on overnight at -13. Came back in 12 hours to find the unit off with the alarm on Had these 4 codes . Only issue I ever had is that the box temperature would always be 3 degrees higher than the set point. You will also see pictures of the failed pre trip (this is after I cleared the fault codes ) I had gotten the unit checked at the carrier service center right after I bought. They found no issues