Dometic CFX3 75DZ

Not as reliable as they say – Purchased 2020, Repaired under warranty two times, not sure what was done but both times would not get down to temperature. Since then temperature accuracy has been terrible, and I have installed a seperate thermometer to see the correct temperature. Another issue is everytime I turn it off for a while and start it up, the rear lid keeps popping open on its own accord. Have to clamp it down for several days for it to stay locked. And now, the temperature reading has gone beserk. Front compartment is showing 6 degrees, Set Temperature is 4 degress and the actual is 0 degrees, Rear compartment is showing 34 degrees, set temperature is -18 degrees and the actual temperature is -9 degrees. Seems everytime we go away on extended holidays it plays up. Update And now the display has an error message "warning12". I have it in with a repairer at the moment, so far they have replaced a "demister part" and it still is not working properly, so they are changing the "compressor module" which alone is $350. I think it going to cost over $500 to repair at this stage. and that does fix the lid.