Looking for some help with this. We have a bosch d/w thats not working. When i power up the unit the cycle display counts down from 4 down to 1 (takes approx 5 mins ) and stays there. you can hear the pump running and when the door is opened there is a small amount of foamy water on the bottom of the tub. when you close the door the d/w stays at 1 and continues to run but nothing changes. Any suggestions ?

Thanks,
Ken