You gotta laugh at me for this one.

I got an Instant Pot from Goodwill for $12.00.

I put the pot on the workbench where I have all of my test equipment. It seemed like it was working but after 10 seconds the beeper would sound continuously. This made no sense so I decided to take the bottom cover off to see if there might be an etch short or open or a dangling wire perhaps. I pulled the power cord and it was still beeping. I was thinking the control board power supply must have a hell of a capacitor on it. But it kept going. Suddenly my wife says the internet is down and I look and all of my monitors were dark and my oscilloscope. The beep is still going. I have fairly severe hearing loss so I could not pinpoint the source of the beep. Then it dawns on me. I had plugged my test equipment workbench into my UPS to free up an outlet. So this poor UPS was trying to run 3 computers, lights, test equipment, and an Instant Pot. It was the UPS screaming that it was overloaded. Duh on me. BTW, the pot works fine.

About 10 seconds after any cooking cycle starts the beeper sounds continuously. I put it in Saute mode and removed the pot after 30 seconds and the heating element was getting hot. So it seems the controller is working. The beep is set to SOFF so this must be an unlisted error code. I will dig into it and look for cold solder joints, etc. Perhaps I should just unsolder the beeper.