Hello

My dishwasheris displaying a F12 fault.
After finishing a full washing cycle the dishwasher was turned off and when it was turned back on later on it did not power on, after a while a F12 code apperaed on the LCD display. Turning on/off or pressing any buttons did not help with anything.
Can you help me with diagnosing the problem, as now I will not be able to get anyone to come and repair it.
Thank you for help
Model no is