Can the CoolSculpting machine overheat and cause false thermal events?

I treated lower abs and both flanks a week ago. Tried to treat upper ab that day, got a thermal event. Went back 3 days later, treated one inner thigh, got a thermal event on upper ab and other inner thigh. Went back yesterday, another thermal event on outer thigh, inner thigh, and upper ab. The room the machine is in is hot. There is a red thermometer that flashes when this happens. Then it turns to yellow, then disappears. Is the issue with the machine? Or is it my full body tattoo?