neff oven error code -5- or -s-?
 
                Hi 
I have a Neff double oven, the top oven is not working and displaying a code -5- or -s-, I heve tried switching off and back on but its still there, any ideas?
Also fan in the working oven keep sticking, can this be greased?
Thanks
            
             Grant
            
 November 2016