Yes, a cooling fan starts working immediately when you plug it in. It is supposed to do that. As long as you are plugged in to shore power the converter will not stop working because many of the items in your TT run on 12VDC constantly and have a constant draw on the 12 volt system (refrigerator, even when running on propane has a 12volt electrical draw to regulate the temperature and tell ignite the burner, or to switch it to 120 VAC / the propane/carbon monoxide detector is always drawing, to name a couple). So it is never "done converting" from 120 VAC to 12 VDC.
2015 White Hawk 25BHS Glacier Package
2004 Dodge Ram 2500, 5.7 Hemi, 5Spd Manual
2008 Arctic Cat M1000 SnoPro
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