Why does CoolSculpting machine keep saying "thermal event" for the same area wanted to be treated?

The distribution of the fat may be different on the right side and the applicator may not be able to grab enough tissue, and hence you are seeing  thermal event. 
1. Examine the area carefully to see if there is enough subcutaneous fat.
2. Newer applicators may not grab the tissue like the old applicators. 
Speak to your physician and customer support.

The thermal error just means that the temperature was not ideal for the entire treatment or the area did not have full contact with applicator. As long as you go the correct temperature for 1 hour, you will get a good result.
My best,
Sheila Nazarian

CoolSculpting is a very precise and sensitive machine. When the applicator is placed on the area to be treated, it has to make a perfect grip otherwise the machine will not work. It is possible that on one side of your abdomen, the fat deposit has a slight difference from the other side. Your physician should be able to answer your concerns.