I have now had the experience of calling for service on my trailer.
The first time I called was when we discovered that the trailer battery was missing. I hesitate to say stolen, because FEMA might have given it to a more deserving trailer. I can say there was definitely a battery there when the trailer was delivered because the lights worked before we had power connected.
We found out it was missing during one of the Entergy blackouts. Since the battery was housed in a nice plastic box. We couldn't tell it was missing until we needed it. I called FEMA. They promptly gave me the correct number to call for Fluor trailer service. Fluor promptly told me they were transitioning to a new maintenance provider and gave me another number. I called them. They sent someone out the next day with a new battery.
Unfortunately he hooked it up backwards, leading to all sorts of interesting problems. The Refer didn't work (It runs on Propane and 12V power) nor did the vent hood. Neither did the inverter, it promptly blew its main fuses. The lights did work, but they were getting dimmer all the time. In the guys defense although the trailer uses a marine battery but it looks a lot like a car battery. My trailer at least uses an electric color code kind of like a building. In a car the positive lead is red and the negative ground is black. In a house you have different color wires, white is neutral (similar to negative), black or red are hot (similar to positive) and green is ground. On the trailer positive is black and the negative is white with a red connector. Confused yet?I called and the maintenance contractor promptly sent out a real electrician who properly diagnosed the problem and fixed it. He was unable to replace the blown fuses, he didn't have any the right size. I went to three auto parts stores before I found them. The first two were sold out. I wonder why?
The whole experience wasn't too bad, it only took two visits by maintenance and a trip to the auto parts store to get it working properly again, but then I know a few things.