A washing machine appliance includes a sump for collecting wash fluid, a water supply valve for supplying the wash fluid during a fill cycle, and a water level detection system including a pressure sensor for measuring sump pressures/fill levels. A controller is configured for operating the supply valve to fill the sump until a target volume is reached and obtaining a fill volume using the water level detection system. The controller determines that a fault condition exists based on a difference between the target volume and the fill volume, e.g., such as when the difference exceeds a predetermined fault threshold, and initiates a fault abatement process in response to determining that the fault condition exists.

A laundry appliance includes a tub positioned within an outer cabinet. A drum is rotationally operable within the tub. A fluid pump directs a process fluid through a fluid path that includes the tub. A fine-particle filter is positioned within the fluid path. The fine-particle filter separates microfibers from the process fluid to define captured microfibers.

A method of controlling a washing machine that includes a drum rotatably provided in a tub that receives water, at least one nozzle spraying water into the drum, a washing motor rotating the drum, and a circulation pump circulating water within the washing machine, the method including: operating the washing motor to rotate the drum in a first rotational direction while repeatedly alternating between an acceleration and a deceleration of the drum so that laundry in the drum alternates between maintaining contact with an inner surface of the drum during acceleration, and separates from the inner surface of the drum during deceleration; and operating a circulation pump motor in the circulation pump, while the drum rotates in the first rotational direction, to accelerate a pump speed of the circulation pump during the acceleration of the drum, and to decelerate the pump speed during deceleration of the drum.

Systems, apparatuses and methods for controlling the various phases and in particular in a wash cycle of a wash machine are provided. In particular, the present application relates to controlling the water levels and detergent composition concentrations in order to reduce the amount of water and composition required to provide improved soil removal. The systems, apparatuses and methods provided allow for the use of less water and lower quantities of more concentrated detergent compositions which are customized to the types of soil to be removed.

A laundry appliance includes a basket rotatably mounted within a cabinet and defining a chamber configured for receiving a load of clothes, a water supply valve for regulating a flow of water into the chamber, and a humidity sensor positioned within the cabinet for monitoring a chamber humidity. A controller is configured to determine that the water supply valve is open to permit the flow of water into the chamber, identify an anticipated humidity within the chamber based at least in part on the water supply valve being open, obtain the chamber humidity using the humidity sensor, and implementing a responsive action if the chamber humidity does not correspond to the anticipated humidity.

A washing machine comprises a first washing drum with a first heater and a second washing drum with a second heater. Before the first washing drum performs a heating procedure, it is necessary to determine whether the second washing drum is performing the heating procedure; if not, the first washing drum performs the heating procedure; if yes, it is necessary to determine whether the remaining heating time of the second washing drum is less than a set value, T min; if yes, the first washing drum pauses the heating procedure; when the second washing drum finishes performing the heating procedure, the first washing drum then performs the heating procedure; if not, remaining heating time of the first washing drum and that of the second washing drum are determined, whichever drum having the shorter remaining heating time performs the heating procedure first, while the other drum performs the heating procedure second.

A washing machine capable of determining an accurate state of a water supplier during a water supply course includes a tub; a drum rotationally arranged in the tub; a driving motor configured to rotate the drum; a water supplier configured to supply water into the tub; a water level sensor configured to measure a water level in the tub; and a controller configured to control the driving motor to perform a first weight detection course before water supply is started, and control the driving motor to perform a second weight detection course based on the water level in the tub being less than a preset water level when a predetermined time has elapsed after the water supply into the tub is started.

A laundry treating apparatus includes a drum and a rotator. The rotator includes a bottom portion positioned on a bottom surface of the drum, and a pillar protruding upward from the bottom portion and having a blade disposed on an outer circumferential surface thereof. A controller controls a driver such that the rotator performs an ascending and descending motion for forming an ascending water flow or a descending water flow at least once in a washing cycle of laundry. The controller performs a method for controlling the laundry treating apparatus and controls the driver such that a rotation in one direction and a rotation in the other direction of the rotator are performed by different amounts of rotation in the ascending and descending motion.

The present invention relates to a washing machine (7) and pump (8) for a washing machine (7). The pump is driven by a brushless DC motor (38). The pump can be controlled to improve the operation of the washing machine. In one aspect the invention comprises a washing machine (7) with a variable speed pump (8) for pumping out wastewater, a controller (50) for controlling the speed of the pump and a sensor (10) for determining the flow-rate of water being pumped from the washing machine, wherein the controller (50) controls the speed of the pump to maintain the flow-rate at a desirable level.

A method of controlling a washing machine that includes a drum rotatably provided in a tub that receives water, at least one nozzle spraying water into the drum, a washing motor rotating the drum, and a circulation pump circulating water within the washing machine, the method including: operating the washing motor to rotate the drum in a first rotational direction while repeatedly alternating between an acceleration and a deceleration of the drum so that laundry in the drum alternates between maintaining contact with an inner surface of the drum during acceleration, and separates from the inner surface of the drum during deceleration; and operating a circulation pump motor in the circulation pump, while the drum rotates in the first rotational direction, to accelerate a pump speed of the circulation pump during the acceleration of the drum, and to decelerate the pump speed during deceleration of the drum.