Too hot????

Hello all...Just installed a Quadra fire 4300 flat top about two weeks ago and love it. Have learned soo much from everyone on this site. Last night I loaded up for an overnight burn with about 6-8 4-5" pieces of one year seasoned mixed hardwoods. I set the primary damper just off the bottom marker and activated my ACC. When i came back to check on it ten minutes later it was in what I believe to be my first "overfire" situation. I could smell the metal and my "inferno" stove-top thermometer was reading almost 850 deg(which I have placed centered about 4 inches in front of my pipe). I immediately deactivated the ACC and completely closed the primary. I kept an eye on the stove and got it cooled down to the 600's in about 15 min. My question is... how bad was this for my stove? No damage seemed to happen but I didn't know how bad getting it to those kind of temps were? Is there anything else I did or didn't do that I should or shouldn't have done?

Thanks everyone!

Ya I had atleast a 2" glowing bed going, maybe should have waited a while before the reload but wanted to hit the hay.