Zanussi WJE 1300 washing machine doesn't start the cycle?

Hi, my washing machine powers up and all LEDs work as normal, but the start button doesn't start the cycle, it keeps blinking. The door is properly closed, the water valve is open, the filter is unblocked, the delay timer is off, but have no idea what's wrong.

The machine started to behave strangely last week when the machine stopped after filling the first water tank of the cycle. Happened 2-3 times in a day, and was solved each time with a forced water drain and unplugging for over 7 minutes.

But now the start button does not start the cycle and just keeps blinking (beeps one time on press like it always does, but nothing happens). Any solution?