audiodisco 0 Report post Posted April 6, 2017 Hi everyone, I'm really hoping you can give me some advice on possibly what to expect from this event. Our kiln is electric and was set going yesterday for a bisque firing at 3pm after school finished, I came in this morning to find the kiln still on, hovering at 987*c, the target temperature on the electronic control was 1000*c before ramping down. I can only assume that its been stuck at almost the top temperature for around 8-9 hours. The main problem being that the only option I've had is just to switch the kiln off and let it cool down, and if it was just my work I wouldn't be so worried, however the kiln currently contains final exam pieces from our students so I am very worried, I am new to ceramics and learning every day but this is something I've never encountered. How will being held at so close to top temperature for such a long time affect it? Am I going to open the door to a kiln full of shards? Thanks for any help you can give. Quote Share this post Link to post Share on other sites
Min 2,267 Report post Posted April 6, 2017 Don't think you will find a kiln full of shards but will probably find overfired pots. Could be a problem if it's earthenware, less so with midrange clay. Sounds like a relay stuck, time to change them. Quote Share this post Link to post Share on other sites
GEP 1,722 Report post Posted April 6, 2017 Agree with Min that a relay may have failed. It's also possible that an element failed during the firing. How old are the elements and the relays? Quote Share this post Link to post Share on other sites
neilestrick 3,323 Report post Posted April 6, 2017 Lots of possibilities as to what went wrong. Relay, element, wire connection, etc. You'll have to inspect everything once you unload it. Quote Share this post Link to post Share on other sites
