Paper jam in fixing unit iRC 3220N

[kleppen]

Hi,

I have a IRC 3220N. There is a paper jam message coming up in the display. The jam is located in the fixing unit(i think it's called that) It's on the left side with the heating drums. My problem is that there is no paper jam, but the message will not go away.
After several opening and closing of the fixing unit it goes away but reappears when I start copying or printing.
I am in the middle of a large print job and need help on this one.

Are there any sensors I have to clean or replace??

Best regards, have a nice day!