Could not turn on at all, may be the digital panel is out of order. Have a power shortage in the house due to the maintenance by edison co.
Answer Hello Li Li,
You should verify voltage to the wall outlet the unit is plugged into. If you have the voltage to the board and the display is dead, verify the connection of the ribbon cable between it and the board. If the unit will allow you to, the diagnostic mode will direct you to problem circuits. To Enter Service Mode: Press Air Fluff and Time (^) - 13 Key Membrane. OR Air Fluff and Time (+) - 15 Key Membrane keys for 3 seconds, or until a beep is heard. The machine will now be in Service Mode and “d” will be displayed. If voltage is getting to the display but will not light up or respond, it should be replaced. If voltage is not leaving the control to the display, replace the control.