A dishwasher includes a dishwasher interior for washing items to be washed with washing liquor. Arranged at a lower end of the dishwasher interior is a pump sump for collecting the washing liquor, and a sensor is arranged in the pump sump for outputting a sensor signal as a function of a presence of washing liquor at the sensor. A control apparatus configured to carry out a washing program selected from a number of washing programs is designed to determine a malfunction of a component of a hydraulic assembly as a function of the sensor signal and of a current operating state of the dishwasher.

An appliance drain pan comprises a floor and an upturned rim around an outer edge of the floor. The floor has a first side portion, a second side portion opposite and spaced apart from the first side portion, and a central portion therebetween. A first plurality of raised projections protrudes upward from the first side portion of the floor. A second plurality of raised projections protrudes upward from the second side portion of the floor. Each projection of the first and second plurality of raised projections has a top surface that is substantially parallel to the floor.

A dishwasher appliance includes a tub. A leak pan is positioned below the tub. A leveling assembly is configured for adjusting a level of the tub. The leveling assembly includes a housing mounted to the leak pan. A leveling leg is positioned within the housing. The leveling leg has a foot. An axle is mounted to the leak pan. A gear set is positioned within the housing. The gear set is configured to transfer rotation of the axle through the gear set to the leveling leg to adjust the level of the tub. The foot of the leveling leg is spaced from a thread on an outer surface of the leveling leg such that the gear set unmeshes from the thread on the outer surface of the leveling leg when the leveling leg is fully retracted.

A dishwasher appliance equipped with leak detection features and a method of detecting leak conditions during an operation cycle of a dishwasher are provided. In one aspect, the dishwasher appliance includes a tub having a sump. A pressure sensor is mounted to the sump and is configured to monitor the sump pressure during an operation cycle. If the sump pressure falls below a pressure threshold during a circulation cycle, corrective action can be taken. For instance, a circulation pump circulating wash fluid through the tub can deactivated and a static pressure reading can be taken by the pressure sensor. The static pressure reading can be compared to a static pressure reading taken prior to the circulation cycle. In response to whether the static pressure is within a predetermined range of the static pressure reading taken prior to the circulation cycle, the circulation cycle can be recommenced or aborted.

Examples are disclosed that relate to a coupling arrangement (36) for a domestic appliance (2), comprising: a connection piece (16) that has a channel (5) for transporting a fluid on its inner side, and a shoulder (18) on its outer side; an elastic bushing (19) that is pushed onto the connection piece (16) in an assembly direction (M), the bushing (19) having, on its inner side, a first shoulder (21) which engages behind the shoulder (18) of the connection piece (16), and a second shoulder (22) on its outer side; and a corrugated hose (26) that comprises, on an end section (28) thereof and on its inner side, a shoulder (35) which engages behind the second shoulder (22) of the bushing (19).

A hydraulic control device for liquid-conducting household appliances or systems comprises:a hydraulic unit (11), having a hydraulic body (15) defining a duct (30) for the liquid, the duct (30) having an inlet (18i) and an outlet (31), the duct (30) being at least partially defined with an electrically insulating material,an electrical valve arrangement (EV, SH) on the hydraulic body (15), which is electrically switchable between a closing position and an opening position, to prevent or enable, respectively, passage of the liquid between the inlet (180 and the outlet (31) of the duct (30),a flow sensor on the hydraulic body (15). The flow sensor is a non-mechanical flow sensor comprising at least two electrical detection elements (42), prearranged for contact with the liquid that flows in the duct (30) and carried by at least one support (41), that preferably at least partly extends within, or faces the inside of, the duct (30) and/or has two opposite major faces that are substantially parallel to a direction of a flow of the liquid.

A dishwasher appliance includes a tub. A leak pan is positioned below the tub. A leveling assembly is configured for adjusting a level of the tub. The leveling assembly includes a housing mounted to the leak pan. A leveling leg is positioned within the housing. The leveling leg has a foot. An axle is mounted to the leak pan. A gear set is positioned within the housing. The gear set is configured to transfer rotation of the axle through the gear set to the leveling leg to adjust the level of the tub. The foot of the leveling leg is spaced from a thread on an outer surface of the leveling leg such that the gear set unmeshes from the thread on the outer surface of the leveling leg when the leveling leg is fully retracted.

A flood detection sensor for a dishwasher appliance is provided. The flood detection sensor includes features that allow for detection of flood events or tub overfills without sacrificing performance or efficiency of the dishwasher during normal operating conditions and for secure mounting to a tub lip of the dishwasher.

A dishwasher appliance that includes features for prevention and detection of flood events and leaks without sacrificing performance or efficiency of the dishwasher appliance is provided. Moreover, methods for detecting and preventing such flood events and leaks are also provided.

A dishwasher, in particular a commercial single-tank dishwasher or commercial multi-tank dishwasher, for washing washware includes a liquid transportation line (100) with at least one supply line for supplying liquid at a first temperature and comprising at least one discharge line for discharging liquid at a second temperature. The supply line and the discharge line run coaxially in relation to one another, so that either the supply line or the discharge line forms an internal line (10) which runs in the direction of extent of the liquid transportation line (100) within the respectively other supply line or discharge line which for its part forms an external line (20), and thereby form a countercurrent heat exchanger.