Dishwasher and corresponding method for operating it

A method for operating a dishwasher comprising:

• controlling a power level to a circulation pump in the dishwasher to keep a water level in a water collection sump below a flat filter except during a break for performing a filter cleaning mode, wherein the dishwasher comprises:
• a circulation filter system with the flat filter arranged between a washing chamber and the water collection sump;
• controlling several cleaning phases within the dishwasher, wherein at least one of the several cleaning phases comprises at least one break for performing the filter cleaning mode during which the circulation pump is switched off or its power is decreased;
• said filter cleaning mode for cleaning the circulation filter system comprising:
• decreasing the power of the circulation pump (4) to increase the water level in the water collection sump (2) above a surface of the flat filter (7) and at least some deposits of the flat filter (7) are floated;
• increasing the power of the circulation pump (4) to draw the deposits that were floated into a discharge section (10), wherein the discharge section is arranged between a discharge pump and the washing chamber.

A method for operating a dishwasher comprising:

• controlling a power level to a circulation pump in the dishwasher to keep a water level in a water collection sump below a flat filter except during a break for performing a filter cleaning mode, wherein the dishwasher comprises:
• a circulation filter system with the flat filter arranged between a washing chamber and the water collection sump;
• controlling several cleaning phases within the dishwasher, wherein at least one of the several cleaning phases comprises at least one break for performing the filter cleaning mode during which the circulation pump is switched off or its power is decreased;
• said filter cleaning mode for cleaning the circulation filter system comprising:
• switching off the power to the circulation pump (4) to increase the water level in the water collection sump (2), which causes at least some deposits of the flat filter (7) to be floated;
• and
• switching on the power to the circulation pump (4) to draw the deposits that were floated into a discharge section (10), wherein the discharge section is arranged between a discharge pump and the washing chamber.