Our 2004 Norcold gets cold enough to store milk (about 45 degrees) in about 3 hrs, with temp set on 7 out of 9 (coldest), and running on propane. If running on electric, takes about 4 hours to get to same temp. Don't know what model you have, but some take longer than others, and Grumpy may be right - could take overnight. Give it some time, as I doubt if the freezer would work if something else was wrong.
2003 Ford F-350 V-10 Crew Cab 4WD Long Bed
2004 Jayco Designer Medallion 29 RLTS 5th wheel
Bill, Gayle, and Mindi (dachshund)
Retired at last !
Nothing is foolproof to a sufficiently talented fool.