Yes, possibly no. If the unit is a dark color top and bottom you may have a problem. The most likely cause is the 30A/50A selector switch for the AC system is set to 30A, or you are runing the system on 30A.
I am not sure where the selector switch is located on your unit, however others will be able to point it out.
Do you have the manual for the unit?
While this isn't much info it helps: Airxcel | RV Products Off-Roof Units
The technical info is a little more info, however the system operation will be your best bet. I wish I have a link to the system operation, possibly others will fill in the blanks.
Our unit works well in 100 degree weather, however our unit is light colored and we cover the windows in high temperaturers.