My Digital Thermostat has two cooling symbols showing up - they each look like a snowflake.?

The AC repair man came out two weeks ago and replaced the capacitor, the freon level was good and the temp check was at a cool 59 degrees. Before I forget, I have a Central AC unit with a digital thermostat. I live in sunny Florida so there are lots of warm days, and like I said above, the symbols showing up next to the word "cool" are two snowflakes, usually it is only one snowflake, as far as I can remember. It has taken two hours to go from 80 down to 79, with the sun going down and helping to cool things off. I have reset the Thermometer and then it seemed to cool down a little bit, but again the air coming out of the vents is not as cool as it normally is. Any advice?