fix machine?

Yes, one can advise. Why not do a Google search for - say - "hy6f3551 fault codes"

You will find things like this:

https://www.hotpointservice.co.uk/appliances/washing-machines/error-codes

It may be (but by no means guaranteed) just that the motor needs new brushes.

Once again, a simple Google search, this time for "hy6f3551 brushes" throws up gems like these:

http://www.espares.co.uk/search/ma808pt1554/washing-machines/carbon-brushes/hotpoint

https://www.youtube.com/watch?v=R-C9Z1BJ814

acp
July 2017