[JRTJH]

You didn't say if it works properly when on electricity, so it's possible you have a problem with venting, temperature control circuitry or venting???

First of all, I'd check operation on electricity. If it is working properly, then I'd look at the propane exhaust chimney to make sure the baffle is installed properly and that the flame is centered in the chimney.

If it is not working on electricity or propane, I'd look at venting to be sure there is no blockage in the vent stack. Then I'd check to make sure the door is sealing properly. Any gap in the magnetic seal will really impact the refrigerator operation while not affecting the freezer.

If the above don't improve your refrigerator performance, I'd contact the dealership to have them check the control board for proper operation.