The 3-way fridge in the TM is called an absorption refrigerator. Its advantage is that it can run from three sources - 120VAC, 12VDC, and propane. Its disadvantage is that it is very slow to cool. The usual advice is to turn it on max, then wait at least two hours, then put your hand on the floor of the freezer. You should feel some coldness - but not a lot. As you noted, the unit is totally silent since it does not have a compressor motor running like a household refrig. Incidentally, the heat you feel in back is normal - it is part of the operation. On the kitchen sink panel, there is a switch labeled something like Refrigerator Fan. It is good to leave it on, as it removes the excess from the back.
Bill
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