Dear SandervG,
Thank you for the hint with the screw. I didn't unscrew it so i thought the PT100 was glued in. The nozzle is now replaced an the printer ready to go again.
Thank You!
One proposal for improvement: i had to write the message a second time, because i forgot tohit the captcha button before pressing reply. The error message came up and the message was gone. Could you perhaps keep the message, when this error comes? It might not only happen to me.
Regards KHN