zanussi FJS 125W wash program keeps returning to start?

My FJS 1225W keeps returning to start position after working it's way for approx 15 -30 mins through the selected program

Is showing the full program time after it does this and start button needs to be pressed again

No error codes showing

Also machine does a severe " jump" occassionaly then goes back to working normally again, machine spins okay

Any help would be much appreciated