Hi Babs, it could be the heater is open circuit or the stat has tripped.It really is an engineer visit as parts will have to be fitted.Due to its age, I would have a guess that the element has gone.This will be approx £130 inc labour and vat.All the best.
FOXY
October 2008
Automatic Answer
We may have found other answers which could help you.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix dishwashers.