I tryed to build my fist 3d-objekt the nozzle melt out of the Isolater Guide
Please: Is this about K8200 or K8400?
Also: You will have to provide more details regarding the nature of the problem, otherwise it will be very difficult to assist you.
Its the k8400.
I started to heat up the Printer after around 15 minutes the Themp was aroung 180°C and the nozzle startet to melt out of the Isolator Guide. Thats all what happend?
Can you supply a link to sharp and hi-res pictures of the problem so that we can take a look and provide some feedback.
Make sure nozzle and thermistor assembly is clearly visible.