Hello,
Well, I dissasembled the print-hed allready and measured the temperatur on the heater element. It was 300C as I thought. This sensor delivers the average on some point (where its important) which is ok.
I cleaned the preheated nozzle with a 3mm drill bit MANUALY.
On the bottom side I do the same with a 0,4mm drill bit. Also Manualy.
Now it works again. This is probably the reason,
they giving the new nozzle head (Olsson Block) for free for every new customer.
Its not a problem to clean the original one, but cleaning the Olsson Block is much easier.
The Atomic Method cleaning doesnt worked for me.
Thank You,
Maverick