Connect the 4-pin connector to the filament chamber and screw it tight. Connect the other end of the cable to the printer in the same way.
IMPORTANT: The filament chamber is always ON when the Main power switch is ON. This ensures the correct environment for the filament in the chamber even when the printer is in stand-by mode. Before you turn off the filament chamber, please make sure you have moved the filament to another place with controlled temperature and humidity environment.