Blinking light means that the system needs service or it is too cold outside for it to run. at least that's what the owner's manual says.So... in short, you don't know what it means either.
I actually gave it the finger yesterday morning when it was 91 degrees and so humid you could barely breathe. I went to turn it on and it just blinked at my three times. I said to it "Really?" and flipped it off.