Machine throw up E90 stops and will not start until I shut down and start it up again

W Leach, October 2010

E90 is a communication error between the pcb and the display user interface pcb.5 wire blue loom gets a bad connection where it plugs on to the user interface pcb.remove wiring and clean display pcb edge connections.this may require the control panel being totally removed

ck, October 2010