how long are you giving it to cool down. These are not instant cold by any means, Put a jug of water or something in it and leave it overnight. 3-4 hours , you will get cooling in the freezer if you touch the sides. Does it work on AC power? If so you may have to clean the propane
burner or your propane
regulator may need to be adjusted or replaced if its old (should be 11" water column at the fridge
test point). The fridge
is the only appliance that does not have its own regulator and totally relies on the one at the tank. On some of these fridges the flame is not much more that what a bic lighter puts out and the difference between the flame at pilot and full on is about a 1/4" difference in height and it pretty critical. Some of the small fridges use a small round screen as a burner and some use a pipe with slits in it. Spiders have been know to set up nests in the pipe by the main jets and may even plug the jet totally.