My son-in-law in Texas just bought his first RV, a '16 Crossroads ReZerve 5th wheel with 2 A.C.'s. The bedroom one works but the main one doesn't blow cold. Any ideas what he can do to correct this ? ...
Have him search this board and the many A/C posts. He needs to isolate like does the fan work, AC and DC (if so equipped to the unit), or thermostat circuit. CB tripped and so forth. Of course air blockage inside and outside can be a factor.