Roof air unit too loud inside; quiet outside.

One thing to make sure is that the cables are actually attached. Take the outside connection apart and make sure the cable is attached to the plate. I worked on RV's for years and this happens more than you think.

You may want to remove cover on roof and inspect for mudwasp nests on shafts, fan blades, blower wheel etc. Quite common for that to happen and cause vibration. The nests throws off the balance.

mud daubers will build dirt nests anywhere pull cover on roof see if drain stopped up

First thing you want to do is to find the source of the leak(s) and seal it to prevent further damage, and if not possible to get it inside, at least get a tarp over it to stop further moisture from entering. In all honesty, they are not real difficult to repair, you just need a place to remove the roof in order to replace damaged parts. Easiest way is to remove it from trailer, and go from there. If outside and sides as well as ends are still good and solid, then it's just a matter of replacing ceiling panels, which wouldn't require removing roof, but by sounds of it, if latches are falling off, and wood is rotten behind them, it may be time to rebuild sides etc. Let me know how bad it is, and include some pictures if possible, and we can guide you through it. Be sure to take pictures before, for your own reference when re-assembling.

The outside unit is on the roof. If possible,get a ladder and get on top and you should see unit. To clean unit,remove screws on the sides, remove top cover.If coils are dirty, spray with a garden hose to clean.

Pat,

12.3 amps @115 volts says the spec -- this is 1400+ watts. A 2000 watt generator should handle it nicely.

Charlie

change out the tstat

Yes and no .. Freezing temps should not affect your A/C at all ... BUT .. there is a freeze control box, its called a control unit to prevent itself from freezing up and burning out, take down the lower cover and you will see it. Your problem is more likely to be more central since neither are working Thermostat or even the control box's in genera, even could be a freon problem if the cold weather was really bad and you could have a leak on your lines, check it out and see what you got!

Did you plug upper unit (on roof) into lower control unit (inside). Not to insult you, because i've done it myself, in a rush situation. Breaker on? Sure you didn't mix up any wiring?

Ice on the coil is caused by 3 things; 1, low freon charge. 2, inadequate air flow across the coil, this can be a filter or dirty coil (I think you addressed these) or the fan isn't blowing enough air over the coil. 3, the unit is running continuously. A heat pump has another cause, that is something defective in the defrost system, like the sensor, reversing valve, control board or relay. If the breaker is tripping its because the compressor is over amping. There can be an obstruction blocking the fan or something like #2. Or the compressor is going out. If the breaker doesn't trip on other settings, like cool, but trips on heat, then I would look at the airflow.