Grill drops temp automatically after about 12 hours

Roujesky · Jul 30, 2023

My 1150 smokes along nicely at 250 for about 12 hours and then automatically drops temperature. I set the temperature to 300 degrees and it seems to struggle to get the temperature up higher than 200. I attached a graph of my cook. What did I do wrong?

Thanks

Cowboy1955 · Jul 30, 2023

Welcome from east Texas to the group!
When’s the last time you cleaned it including the temperature sensor ?
I clean mine after each cook.
Hopefully this helps you

Roujesky · Jul 30, 2023

I vacuumed it out fight before the cook. The temperature seemed reflect the actual temp. I powered it off and on, and started working correctly. This was not a really big issue since it was a pork butt. But I want to do a brisket soon and i don’t want it to shut the temperature down like that again…. It must be something I set up wrong or something

Btw: thanks for the welcome

Cowboy1955 · Jul 30, 2023

Roujesky said:
I vacuumed it out fight before the cook. The temperature seemed reflect the actual temp. I powered it off and on, and started working correctly. This was not a really big issue since it was a pork butt. But I want to do a brisket soon and i don’t want it to shut the temperature down like that again…. It must be something I set up wrong or something

Clean the temperature sensor and fire it up with nothing in it and see what it does
Cleaning it stops temperature swings

brewersfan73 · Jul 30, 2023

I've heard other people talking about the grill automatically going into a "keep warm" mode after the meat probe reaches a target temp. Could that have happened here?

I don't know which models have that feature.

Sparky · Jul 30, 2023

Welcome to the club

Freedbyjc · Aug 5, 2023

Roujesky said:
My 1150 smokes along nicely at 250 for about 12 hours and then automatically drops temperature. I set the temperature to 300 degrees and it seems to struggle to get the temperature up higher than 200. I attached a graph of my cook. What did I do wrong?

Thanks

It’ll automatically drop into water mode once a preset temperature is reached on the meat probe.
It’s all done through the MPC PROBE.