A new AC condensing unit and coils were replaced. The current blower stayed and most of the original wiring. I worked great for 1 week (about 79 degrees a little cooler at night) About a week later it was 86 degrees and would not cool down, it eventully will somtime during the overnight hours. Usually still 86 at 10 at night. The first couple of hrs during the day(before 9) it runs and shuts off like it is suppose to. The freon level was check and it was correct. No ice either. What happened and what can I check. Also al windows are covered with dark sheet along with blinds or shades.