Supply power failure. Due to thunder and lighting, blackout etc. This error appears on the machine when the mains power has been interrupted.
this is not necessarilly a product problem.
This display message is indicated to alert the user that a power failure had occured.
It just tells you that your product remembers the operating status when the power was disrupted.
to resume the operation before the power interuption, press the power button and then the start button. The machine will then resume from where it left off.