turned the unit off and left the door open for 1/2 hour - from reading other posts, supposed problem may partially be damp controls caused by the overfilling and water running into door hinge. later turned on and all was OK - turned on rinse cycle and added 1/2 cup white vinegar as Bosh recommneds occasionally adding vineger to dishwasher during regular rinse cycle to clean hardwater, soap and other deposits from contacts of sensors - probably also cleans float switch components. Anyway - it worked and unit is fine now. Bosch actually recommends placing a cup of white vinegar in a bowl face up in the llower rack and turning on the wash cycle. Saw a copy of the email from Bosch to another user of the forum regarding another problem.