You DID try searching? This was the third or 4th result!
Crumbs
January 2015
ignore. Answered wrong question.
Crumbs
January 2015
It could be the element itself has gone u/s. If you or a friend are competent to take the machine apart, check trhe lement and replace it yourself ((http://www.espares.co.uk/search/mo1540893/breadmakers/small-appliances/kenwood/bm250?SearchTerm=element) then fine. Otherwise it would probably be better/cheaper to get a replacement. May one recommend a Panasonic machine?
Crumbs
January 2015
Automatic Answer
While you wait for answers, we may have found some information which could help you.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix breadmakers.