Ariston washer dryer A1400WD ?

My machine is over 5 years old but has worked fine until now.Machine will not spin fully in wash cycle. When it goes to spin cycle from wash cycle the door lock LED and spin LED indicator flash rapidly. The machine does not spin and ultimately goes through a drain cycle.When I programmed spin cycle directly the machine did spin at speed but vibrated alarmingly and jumped around. I had to switch it off immediately.
I have already checked drain hose and filter which are ok.
What is the problem?
Thanks
JC