It is not enough of an explanation for me. Your smart. Cause your you. Many here probably have zero idea what were thinking. In other words we must break it down and spell it out. It's important that these guys tracking this thread understand the basics of theory. I think it's extremely important for every one's knowledge.
Theory is, basically, latent heat of evaporization. And one must understand this in order to think through and then answer to themselves with confidence that this occurence, an overcharge, by itself will not cause an evaporator to ice up, or frost up. In an Air conditioning System. Were talking AC, not refrigeration, which we can get into later.
Of course, we could go and say low ambient, then add low airflow, low load dada dada da. But by itslef, on a design condition day, overcharge does not ice up a coil.
But. Anyway. I wish I was as smart as you. Than I'd be not wrenching anymore. Out of curiosity. Have you ever been a feild tech before Sporlan.