Could use some assistance

After eyeballing them for a while I finally gave in & got a 6qt Ultra through Amazon's Black Friday sale. It arrived Tuesday.

I'm having a problem with my saute function turning itself off. I did reach out to customer service with a detailed description of the issue, but they have not responded as of yet.

I'm a pretty tech savvy guy, with over 25 years of experience in the food service industry - I've been a chef, a baker, a brewer, a distiller - I know my way around a kitchen & I always RTFM.

So my first meal was going to be orange chicken. Pretty straightforward, I could make it in a wok pretty easily. Use saute to brown the meat, add the sauce ingredients & pressure cook, use the saute mode at the end to do a basic slurry.

I turn on the saute function, set for 5 minutes on high, as per the manual & recipe & wait for the InstantPot to preheat. It finished, the timer started, I added my chicken, started to stir it, only to look down & the InstantPot had turned itself off. This was about 20 seconds after the timer had started. I emptied everything into a mixing bowl, figuring I screwed something up & started over. Exact same result. So I ended up cooking the chicken in a wok, & proceeded with the pressure cook step. Worked fine. Made my slurry, mixed it in & went back to saute mode to set the slurry. Same. Damn. Thing. 20 or so seconds after the timer starts, no warning, no burn notice, no nothing, it just turns off.

Second meal was last night, red Thai curry. Very similar process - saute the curry paste, add the ingredients to pressure cook and done. This time it didn't even finish preheating. The progress bar got to about 2/3's full and it just turned off.

Am I doing something wrong here or do I have a lemon?