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 ? ...
has he gone on the roof and taken the cover off and looked at the unit yet? Cooling fins could be all plugged up. They make cleaning kits for the fins. Would be a good first thing to check