My Bryant 376cav G downflow furnace doesn't work. Here is what happened. After turned on, we did saw the flame and wheel rotated. But a few minutes later, the flame disappeared and the led flashed, then the wheel stopped. The led light indicated 3-short and 3-long flashes. But I do not know how to fix it although there are some information on the tag. So please give me a help and any suggestions are highly appreciated.