Ever since we had to troubleshoot our refrigerator while camping in FL this winter I have been looking for other SERVICE MANUALS for those "just in case" situations. Here is a very good website that includes downloadable links to some service manuals for things like the AC, Furnance, and Refrigerator. These are the service manuals the RV repair shops use to troubleshoot a problem. http://bryantrv.com/index.html
The website also gives some very good explanations of how things work in the RV.
The refrigerator repair was easy to follow and only cost us $30 to repair and no service call.