A dishwasher appliance includes a wash tub that defines a wash chamber, a sump for collecting wash fluid, a pump assembly for selectively urging a flow of the wash fluid from the sump, a microphone for monitoring sound generated during operation of the dishwasher appliance, and a controller in operative communication with the pump assembly and the microphone. The controller is configured to energize the pump assembly, obtain a sound signal generated during energization of the pump assembly, determine that the pump assembly has experienced an arcing event based at least in part on the sound signal, and implement a responsive action in response to determining that the pump assembly has experienced the arcing event based at least in part on the sound signal.

A dishwasher includes a controller controlling a cleaning cycle, a screen system for filtering a wash fluid, a circulation chamber and a collection chamber in fluid communication with the circulation chamber via a screen arrangement, a circulation pump for circulating the wash fluid and a drain pump for pumping out the wash fluid. During the cleaning cycle, to detect blockage in the screen arrangement, a degree of transmission in the circulation chamber filled with wash fluid is determined with an optical turbidity sensor in a first measuring step. The wash fluid is then pumped out of the collection chamber and the degree of transmission in the circulation chamber is again determined in a second measuring step. The change in the degree of transmission from the first measuring step to the second measuring step is then evaluated.

A wash or dishwashing appliance may include a cabinet, a tub, a door, a fluid pump, a controller, a low-power input sensor, and a conditioning circuit. The controller may be configured to alternate between an active operational mode and a standby mode. The low-power input sensor may be configured to detect a fluid-loss event at the dishwashing appliance at the standby mode of the controller and transmit a fluid-loss signal in response to detecting the fluid-loss event. The conditioning circuit may be attached to the cabinet in electrical communication with the low-power input sensor and separate from the controller. The conditioning circuit may be configured to receive the fluid-loss signal apart from the controller at the standby mode and initiate a mitigation action in response to receiving the fluid-loss signal.

An appliance and method for operating an appliance is provided. The appliance includes a pump configured to flow a volume of fluid, a flow nozzle configured to eject the fluid provided from the pump, and a motor configured to selectively operate the pump to flow the fluid through the flow nozzle. The method includes acquiring a dataset including a function of current magnitude and time corresponding to operation of a pump to flow a volume of fluid; determining an average current magnitude based at least on the dataset; determining a standard deviation based at least on the average current magnitude; comparing the standard deviation to a threshold to determine whether to transmit a control command based.

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.

A hydraulic system for a household appliance which includes a pump that is driven by an electric motor, an outlet conduit in fluid communication with an outlet of the pump, a magnetic check valve having a flap and a control unit. The control unit is configured to control the speed of the electric motor in a closed loop and to determine whether the flap of the check valve is in an open position or in a closed position based on the torque of the electric motor estimated from the current consumption of the electric motor and/or the voltage in the terminals of the electric motor.

A dishwasher according to an embodiment of the disclosure relates to providing a control method for determining whether a filter is clogged. A dishwasher according to an embodiment of the disclosure may comprise a tub, a sump assembly disposed under the tub and storing washing water, a circulation pump pumping and circulating the washing water stored in the sump assembly, at least one jet device jetting the washing water pumped by the circulation pump into the tub, a filter disposed under the tub and filtering a foreign object flowing inside the tub, a current sensor detecting a driving current input to the circulation pump, a vibration sensor detecting a vibration signal of the tub generated by driving of the circulation pump, and a controller configured to detect whether the filter is clogged based on information obtained from the current sensor and the vibration sensor.

A washing appliance comprising a tub to house items to be washed; a circulation pump (130) to circulate a washing fluid in the tub; a circulation pump motor to drive the circulation pump; a drain pump; a detection unit configured to monitor at least one electromechanical parameter of the circulation pump motor, and to detect, based on the monitored at least one electromechanical parameter, a starvation event indicating that air is drawn out by the circulation pump or a saturation event indicating that no air is drawn out by the circulation pump: a control unit configured to determine a first starvation event and a second starvation event occurred after the first starvation event, wherein the first starvation event is determined when a starvation event is detected after a first number of consecutive saturation events (N1) is counted, or after a first time interval (T1) has elapsed during which no starvation event is detected, and wherein the second starvation event is determined when a starvation event is detected before a second number of consecutive saturation events (N2) is counted after the first starvation event, or before a second time interval (T2) has elapsed after the first starvation event during which no starvation event is detected.