I suspect it's either the 240V heater element or the 240V thermostat which has failed. You can test the element by identifying the wires to it and performing a resistance check. The heating element is in the metal stack in the rear of the unit. Use an OHM meter and check for resistance, the higher the better, low or no resistance means the elemnt is bad. Make sure you check all the fuses on the control board also.
Look at the specs on the label, if it says that the charger is capable of taking a 240v input then you can change the plug and use it at 240v with no problem. If it says 120v then you won't be able to, you'll want to use a transformer or some other 240 to 120v supply.
chances are the power inverter has gone,(it takes 12 volts upto 240)
easy to check,use a lightbulb and the two wires to check power output.BE CAREFULL NOT TO TOUCH THE WIRES.
http://www.220converters.com/ GO TO THIS WEB SITE AND YOU CAN FIND ALL THE CONVERTERS YOU NEED ALSO READ THE NOTES ABOUT WHAT YOU NEED TO TAKE WITH YOU BATTERY AND POWER WISE . HAPPY TRAVELS AND HAVE A GOOD TRIP
Your refrigerant may have completely separated in the system. Shut of the gas, disconnect the electrical and remove refrigerator from the coach or if you have sufficient room inside set it on a clean area. This operation is what is called burping the system.
1. From the base roll it onto the door and wait five minutes.
2. roll it onto the top and wait five minutes.
3. Roll it on the back and wait five minutes.
4. Return it to the base and wait five minutes.
Reinstall it or test it on electrical. It should show signs of cooling in about 30 minutes in the freezer compartment if the system is not plugged in the boiler.