I'm a new 025 owner. 3 previous cooks went great and today I decided to try a 6lb butt. Everything went fine until about 4 hours into the cook when the cook temps started rising from 225 to over 300. I thought maybe the probe was off so I checked it against a Maverick and found them to be within 2 degrees of each other.
I used 2 chunks of the wood supplied with the smoker. I tried opening the door to let things cool down and as soon as I closed it the temps started rising rapidly again. I went through this procedure twice with the same result.
When I opened the door I noticed allot of sizzling where the fat was dripping onto the top cover over the cooking element. The butt had a nice bark on it so I wrapped it in foil to finish the cook. The temps immediately stabilized and have been so for the last 2 hours. It appears as though the dripping grease was causing an internal heat increase greater than what I had the cook temp set at. Does this make sense or can anyone offer any insight or suggestions. Thanks.