Norcold not cold while traveling
So, our Norcold 1200 is 14 years old. When we first bought the coach 4 years ago, there were no issues with cooling, either when stationary or traveling. After 56K miles, we gradually started to loose cooling, primarily when traveling (fins reaching nearly 50F while underway). Did all the usual fixes--fans, ARP, baffles, cleaning, etc. Just as we were about to chuck the thing, we figured out the issue. First, our door seals are getting pretty weak. Not happy about a door replacement as the fix, but it is what it is, Second, I finally wandered across a thread on IRV that described a problem with the sealing of the cooling unit pocket. Posting this for future searchers.
It seems our primary issue is a failure of the sealing compound in 4 locations--where the drain tube enters the back of the fridge, the icemaker wires, and the cooling unit tubes themselves (2 locations). Researching the best sealing method now--looks like the original was "permagum" or duct sealing putty, and it certainly held well enough for a long time. Just wondering if expanding foam might not be a better fix.
2004 Winnebago Journey36G, 2 humans and 9 dogs racing our way across the country!