igen3dprinting

The bed of my ultimaker 3 is not heating up. I'm not sure if this is an issue with the printer or with the cura 2.1 software I am using. When the g code is sent to the printer via network or by usb, the printer does not recognise that the bed needs to be heated.(when I go into the tune feature on the printer it says 18/0). This issue occurred when I switched the filament in the first extruder from pla to abs