I am sure your Technician will perform a complete analysis as to why your "NEW" A/C unit failed.

However, it might be useful to examine the major cause of A/C failures on Campers / RVs.

Often, there is too little electrical energy going into the A/C unit to let it operate efficiently and correctly. This can be caused by running the A/C unit while your camper is plugged into a "too small" extension cord or an extension cord which is "too long". This causes a "Brown Out" (or low voltage) condition at the A/C unit itself and, over time, (a short period of time) the A/C unit fails. While the A/C unit is still able to operate, it is essentially being "Starved to Death".

This condition also happens at Campgrounds (especially on Hot Days) when everybody is running their Air Conditioning at MAX to keep cool and the Campground's electrical system has a hard time keeping up with demand. We experienced this on our last camping trip, whenever our A/C was running, our voltage dipped below 110 volts (not good for the longevity of our A/C unit).

So, what can be done when you are at a campground and the voltage from the power pole is too low to safely operate your Air Conditioning?

The answer is to install an "Autoformer" between the power pole and your camper. An Autoformer has the ability to boost your voltage by 10% which can protect your A/C unit from "Low Voltage" damage and premature failure. The Autoformer is simply a "Box" that you plug your camper into and then you plug the Autoformer into the power pole.

Here is the Unit we will be purchasing BEFORE, our next camping trip:

AutoFormer

I know these aren't cheap, but they are cheaper than replacing an Air Conditioner.