We just had a Rheem quiet 80 installed and there is now a green light that blinks 3 times. What is the problem and how do I fix this.

We just had a Rheem quiet 80 installed and there is now a green light that blinks 3 times.

With a furnace just being installed it is always best to call the dealer or contractor that did the work. You should be under warranty. I you try to work on the furnace it may void your warenty.