hi can anyone help , i have an ADG7450/1 dishwasher, the motorspray pump leaked and i have replaced it however the dishwasher will not complete any cylcle except a rince cycle...if I select a wash programme it gets as far as filling with cold water and starts to wash but the water never heats and it just keeps washing and washing but little else. after a while it makes a few loud noises like a timer is stuck or something? is the thermostat or heating element gone? help please!! denis