Hi Lorna, it may be the heater overload has tripped.There is a red reset button on the thermostat behind the heater element or the element may be open circuit and need to be replaced.the final option is that the pcb is faulty.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.