if your appliance is under 5 yers old, you have a 5 year parts warranty with hotpoint..it will cost you around £90.. for a service call out, parts will be free..
Unless you are acompentent engineeer this is not a simple DIY job..call the experts it will work out cheaper
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix washing machines.