Hello,
I own a skutt KM-1227 single phase, 240V kiln.
I recently noticed that the wires that connect the top two rows of elements to the terminal strip looked a little brown on the outside and the connector looked darker brown too. I replaced the connector. Completed a few more firings before noticing that the connector for the top coil, the plastic shell had melted to the terminal strip(this firing schedule also completed, I’ve never had any error codes or failed firings). I take my kiln apart frequently, in order to load larger sculpture work, I thought maybe I didn’t attach it back tight enough? I decided to give the kiln a little maintenance since I bought it used about 4 years ago and had only replaced the elements a couple years back. I replaced all the connector ends on the wires that plug into the terminal strip. I also replaced all three relays(the relays were almost black and had derby inside), everything was plugged in properly and fitted tightly. I ran the kiln again cone 5, slow speed, took about 13 hours to complete which was consistent with past firings with the same schedule. I powered down the kiln and waited a couple days for it to cool, when I turned it back on this time it was making a buzzing like when the relay clicks and power flows, I powered down opened up, the connectors looked fine, but the relay that controls that top row of elements the wire for the very top row melted into the relay. Has anyone heard of any similar experiences, or has any suggestions on how to remedy this problem. I was thinking of replacing the wiring from the elements to the terminal panels next. Any help is much appreciated.