It should be understood that the electric kiln is first of all a problem of the heating wire, and the problem of the temperature control plate is also a problem of sealing. If the heating wire is broken, you have to send it back from where you bought it and replace it. If there is something wrong with the second temperature control board, you can take down the control box and send it to them for repair, and then bring it back to you. The third one is off. Generally, it's mainly the door. You still need them to get you another high-temperature cotton, and you have to replace it then.
After reading the above three points, you should pay attention to buying kiln.
First, what did you buy the kiln for? You just want to have fun. Then buy a smaller civilian one, that is, one with a voltage of 220V, with a maximum of more than 8KW. Also check whether the wire you are using can pass the current of 36A. If not, we have to reduce the power, say 6KW. The power is also related to the size of the kiln cavity. If the power is small and the cavity is large, it is difficult for you to reach high temperature, so you need to adjust the corresponding power and cavity ratio. There is a bad problem that the firing cost is very high.
The second is the design of kiln. There are many kinds on the internet, and I have also looked them up. Some of them embed the control panel of the kiln into the kiln body. You still don't want to buy this advice because it's unscientific. If it is broken, it will be difficult to maintain, and the heat of the second kiln itself will also accelerate the life of the temperature control panel.
Thirdly, if you are a studio or a small workshop, you need to find some colleagues to help you find a kiln worker and design and customize a good kiln for you, which will take many years.