Lavamat Turbo 16830 will only start after 1 or 2 attempts ?

I have a Lavamat Turbo 16830 which fills with water but fails to start the program.
The machine routinely has to be switched off at the wall and restarted 1 or 2 times to get the machine to start. Do you have any ideas?.
the outlet filter is clean, and once the machine starts it completes the run, but it's getting the initial start that is proving frustrating