Yes - a simple fix really.
The door lock was faulty, which I had already replaced. F36 remained in the error log and the machine would not work until it was reset via service mode and tested, Appliance now working to spec.
Buy a new door lock - cost about £50, depending on model.
Easily removed and new one fitted with 2 simple screws.
Follow Miele instructions to go into Service Mode, Clear the Errors, Power off...back on again and machine works perfectly.
Had no issues every since.