Patent ID: 9532698
Date: 2017-01-03
CPC Classifications: A47L

Claim:
1. A dishwasher comprising: a control facility for performing a wash cycle for cleaning items to be washed, a screen system for filtering a wash fluid, said screen system having a circulation chamber and a collection chamber that is in communication with the circulation chamber via a screen arrangement through which the wash fluid flows, a circulation pump for circulating the wash fluid, a circulation chamber connector disposed on the circulation chamber for the circulation pump, a drain pump for pumping the wash fluid out, and a collection chamber connector disposed on the collection chamber for the drain pump, wherein the control facility is configured to perform at least one detection sequence for detecting a blockage of the screen arrangement, said at least one detection sequence comprising: wherein the control facility is configured to determine that wash fluid is not present in the circulation chamber and that a blockage of the screen arrangement is not present, if the degree of transmission from the first measuring step to the second measuring step decreases by at least a first minimum value, and wherein the control facility is configured to terminate the at least one detection sequence in response to a determination that wash fluid is not present in the circulation chamber and that a blockage of the screen arrangement is not present.