Increase to 1420°F at 300°F/hr; hold for 30–60 min.
The Evenheat Kiln Model 5320 manual has a dedicated troubleshooting matrix. Here are common issues: evenheat kiln model 5320 manual
By following the setup, programming, safety, and maintenance steps outlined above, you will avoid the most common mistakes: Increase to 1420°F at 300°F/hr; hold for 30–60 min