RV Repair: RV air conditioner blown fuse, blown fuse, fuse box


Question
QUESTION: I have a 1970 Airstream with a new Coleman AC unit and I blew the circuit breaker in my house when I plugged it into the outside outlet. After some diagnosis I found that the green ground going to the AC was shorted to the black wire (power). I disconnected the green wire on both ends and the AC seems to operate properly. My guess is that there is a start capacitor and that it is shorted. Is that a common failure mode? If you get this right, I'll let you answer my black water/fresh water no level monitor light question. Ha Ha.
Thanks very much,
Dean

ANSWER: Hi Dean
 I am sorry of the delay in returning this. I am confused. What and were did you eliminate the green wire?? Please get back with me.

---------- FOLLOW-UP ----------

QUESTION: No problem. I disconnected the green wire at the fuse box. The wires (Green/white/black in nomex) from the fuse box seems to run directly to Off/fan/AC switch on the AC unit. Some wires run from the Off/fan/AC switch go to the temp control switch on the AC unit, but I can't tell where else. I am sure some of these wires go to the motor, but I can't see them. Maybe if I take the cover off the top these will be visible?
Thanks,
Dean

Answer
Hi Again,
 You have a big potential for shock hazard here. Your green wire is the ground. The AC will run without it but has no path back to ground. If you were to touch the wrong thing inside the AC, Death but electrocution is a very real possibility here. I would not recommend repair unless you really know what you are doing. I would take it to and RV repair place near you. Good luck