OK. I am at wits end dealing with my friend's 1200LRM. He was getting the NOCO message so I jumped the appropriate pin and got rid of that. Also the glass fuse was blown. I replaced it and it blew again. The two heating elements are within Norcold ohm range. It is now running on propane, but I can not get to the cooling fan thermostat or the cooling fans to test them without pulling the unit out. If they are working, I still have an AC problem. May still be a bad heater or power board. If I have to pull the unit, the Country Coach as a very large window that we can use. Has anyone replaced Norcold with residential. If so, which unit did you use and how did you wire it to the inverter and is the 2000 W inverter enough.
I know this is long, but this has been frustrating.