The work is overfired but there is no error code. Here are some things to look for:
- Cones placed wrongly in cone pack- angle is off
- Small or wrong cones used
- Fired to the wrong cone
- Firing with a hold time at the end
- Firing a Vary Fire program to too high a temp for the rate of climb
- TC offset adjustment needs to be set higher
- TCs reading unevenly (from age or loading unevenly or too close to TC) make it take longer to even out(must be firing and hot to see this; press 1,2,3),
- Old elements have more and more trouble responding to uneven temps- (from TC age or from uneven loading or loading too close to the TC) this makes the kiln take longer and can make cones look like an overfire
- Lid/ Hinge out of adjustment- opens a bit in the front when hot.
