Stampede Huge Temp Swing on my RT-590

[Lightngsvt]

Hello everyone, my first post. Had a weird thing happen today, I have a small ~6lb Brisket Flat in there with the temp set at 235*. I forgot to check the hopper and it ran out of pellets, I refilled the hopper assuming everything would be fine. I check a while later and the temp was 290*, I backed it down, let it cool a bit but it shot right back up. Next, I shut it down, let it sit for a couple of minutes, and since it started, its been rock steady at the proper temp like it always has been. Any ideas what could've happened?

 

[Dougfresh]

Well, you ran out of pellets and threw the controller a curve ball.

I wouldn’t be too alarmed by it. In my experience it’s not uncommon for the grill to overshoot the temp a bit while trying to put everything back in balance.

 

[Lightngsvt]

Cool, thanks. I wasn't too worried after the fact. But when it overshot by 55* for well over an hour, it was just very odd.