JRW

Thanks, those are good ideas. I’m almost certain that I programmed the hold time correctly but it did occur to me that could be the issue. But twice?
 
The only other thing is that when the kiln was past the desired temp and I stopped the firing and restarted it, it was already above 200 degrees. (200 was the desired hold temp). So I assumed it would cool to 200 and then hold, but instead it just kept heating. I don’t know how the kiln algorithm handles a situation where it is supposed to be ramping up to a temperature but starts the firing program already above that temperature.
 
I will do a test on empty at a lower interval as you suggest. Thanks again!

Thank you!