E8 is fault connection from CCU (Control board) to balancing sensor.
When you get E8, this is often because of a faulty control board.
Try first disconnecting power for a couple of minutes, to reset the appliance.
If you still get E8, then you need to call a technician. Testing is done jumping the two wires to the sensor to bypass the sensor, then replacing either sensor or control board.
Steve, September 2010
