The AC is back online.
They finally arrived after 4PM. Talked a bit, and tested a bit. Looked up e10 code, Talked about the compressor monitor being the issue. Nathan has worked with the company 2 weeks, the other guy 3 months. It ended up being a bad capacitor. They are about 10 to 20 dollars. He ordered 2 so we have a spare. The bill will likely be 200 to 300 dollars.