It appears that I spoke too soon yesterday (on another thread).
My Auber seemed to work well on 2 short 2-3 hour smokes after I had manually tuned it. However, about 20 hours ago, I put a 9lb pork butt in and have been having the same wide temp swing issues again.
I started the smoke around 6pm last night. All seemed well until I went to bed around 10pm. I had been observing it until then. When I woke up this morning and checked on it around 7am, the temperature was swinging from 235 down to 190 and back up to 235 again (I had it set at 235 for the step it was on). My internal temp was only at 170 after 13 hours, which is not anywhere near what I would have expected. So, I cranked up the temp to 250 for the step it is on. She shot up to 250 with no problem and then proceeded to start swinging again. This time it is swinging from 250 down to 230 and back up to 250, and repeat. My meat has been in now for 20 hours and my internal temp is 192. Almost there. I think that these wide temperature swings have caused a huge delay in cook time and I am frustrated once again.
I am so glad that I haven't decided to install the wall probe yet. I'm going to call Auber next week and see if they will replace my unit with a new unit and see if I have the same issues. If the issues continue, I'll just ask for a refund. My Auber has been a huge disappointment so far.