I fired "Pearl" , my new kiln, twice last week to dry shelves and the bottom wash. It seemed to be okay but fluctuated at the top temp by 40 degrees. I thought maybe it was due to having the lid cracked to let out all that moisture.
The third time I fired it on Friday it failed after 3 hours. The error message said, "TCR" "Thermal Couple wires reversed" Disappointed I wrote to Arnold at Paragon. He wrote back and said the other numbers in the error code meant he needed to send me a new controller. We were both disappointed.
Surprisingly, Laura @ Paragon emailed me that night at midnight her time. We passed several emails back and forth over the weekend and I think we fixed the problem. The thermal couple wires were touching the power wires and creating electrical noise. The computer could not hear itself thinking.
I fired her up at noon today. I plotted out exactly what the temp ramp and time should be and the kiln has followed it to the exact degree for 5 hours now. Yippy!

I LOVE Paragon! When I have trouble they help! I could not believe Laura was emailing me on the weekend. Wow! I was so disappointed when I thouhgt I needed a new controller, but I knew Arnold would not let me down.