Hotend burn risk

What happened? 

The printer shows the message "The nozzle is very hot. Close the door to prevent burns".

Error name: Hotend burn risk

Error code: #31140 (CORE One) #35140 (CORE One L)

Possible action

For safety and functioning of the printer, close the printer's door. 

It is still possible to 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.