We bought our TM used and the refrigerator (Dometic) warranty was depleted. The heater on the 12 V works, but it just doesn't keep the refrigerator cold. I actually replaced the heater, but it still is only marginal and if you travel like we do - 12 to 14 hours a day - it's warm by the time you set up at night. Yes, the power is getting to the heater, and yes, we run the auxiliary fan. We use our 12V cooler for most of the things we would generally put in the refrigerator. Then when we reach our destination we put the stuff in the Refer. It works great on 110V and propane. This problem may be why the newer TMs have a different (Norcold) refrigerator. The latches are adjusted down tight and the shells are down tight against the frame. I have even cut out the corner clamps to hold it tighter and they still come loose. I will be addressing this problem when the TM is no longer hidden under all that snow!
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