What happened?
The CORE One cannot work with the doors opened. If you start the print with the doors open, the message "Close the door to prevent air drafts, burns, and other undesirable effects." will appear.
Error name: Door Open
Error code: #31110
How to fix it?
Close the door of the CORE One. You can print filaments like PLA and other low-temperature filaments with the enclosure closed due to the active cooling, there is no need to keep the door open to print them.
If you still wish to print with the door opened, it is possible to turn off the door sensor. To do that, on the printer menu go to Settings -> Hardware -> Door Sensor, and turn it off. You will receive a warning: "Caution! Disabling the door sensor may lead to injury or printer damage. Proceeding means you accept full responsibility. We are not liable for any harm or damages." This includes the possibility of any damage caused to the printer, objects, or others as a result of the doors being open when the sensor is off.
If the issue persists even when the door is closed, make 写真・動画の撮影 of the door and the error and contact our カスタマーサポート.