A turbidity sensor assembly for a dishwasher appliance is provided. The turbidity sensor assembly measures the turbidity of wash fluid in a manner similar to conventional turbidity sensors, but also includes an integral water level indicator. The water level indicator is an opaque buoyant ball that rises and falls with the water level to provide a water level indication that can be used to shut off the drain pump when the sump is empty. More specifically, when the water level drops below a predetermined level, the opaque ball blocks the transmission of light between the emitter and receiver of the turbidity sensor, thus indicating that the sump is almost empty. As a result, the pump operating during a drain cycle need only operate long enough to drain the sump, and this may be achieved without an additional measuring device or complicated control system.

A dishwasher and method utilize an imaging system to perform various diagnostic operations within the dishwasher, including one or more of level sensing, filter cleaning, wash tub rinse down, foam detection, imaging system cleaning, and remote viewing.

A condition warning system for an apparatus such as a pot and pan washing machine, a control system and control methods for a pot and pan washing machine are provided. The condition warning system includes a control system that monitors operational, safety or compliance parameters of an apparatus, and a light that illuminates a location below (or above) an operator's direct line of sight, and which is outside of the operator's direct line of sight. The control system and control methods include a punitive wash action lockout, an extended wash cycle time, and a deep clean wash cycle.

A cleaning method includes sensing at least one trigger, where the at least one trigger is chosen from sensing a presence of a first liquid within a wash compartment of an appliance with a liquid sensor and sensing an elapsed time from activation of a faucet of the appliance with a timer. The cleaning method also includes draining the first liquid from the wash compartment of the appliance. Additionally, the cleaning method includes rinsing the wash compartment with a second liquid. The draining of the first liquid from the wash compartment of the appliance and the rinsing of the wash compartment with a second liquid are both performed prior to initiating a wash cycle of the appliance.

Dishwashing appliances and methods, as provided herein, may include features or steps such as performing a drain cycle; detecting a pressure (P1) during an activation period of the drain cycle; comparing the pressure to a first predetermined pressure limit; comparing the pressure to a second predetermined pressure limit; determining a target fill value based on a difference between a normal fill volume and a fluid volume corresponding to P1; and initiating a fill cycle based on the target fill value.

A free-standing Energy Recovery System enables sanitary recovery of thermal energy with heat transfer from hot waste effluent to incoming domestic water. The source of the effluent may, for example, be conventional commercial ware-washing, clothes washing equipment, pasteurization and other industrial processes.

Disclosed are a dishwasher that sprays wash water to wash dishes or cookware and a method of controlling the same. The method of controlling the dishwasher includes supplying wash water from an external water source to a sump and intermittently driving a washing pump to change the level of water around a filter, thereby removing filth from the filter.

A method of controlling a dishwashing appliance may include determining that a cooking operation has been input to the dishwashing appliance via a mobile device, receiving an input option for the cooking operation via the mobile device, and activating the pump to supply a predetermined volume of fluid to the container at a predetermined temperature.

A dishwasher, comprising: a wash tub; a sprayer configured to spray fluid within the wash tub; an imaging device configured to capture images within the wash tub; and a controller coupled to the imaging device and configured to perform a remote start of a wash cycle in the dishwasher in response to receiving a remote start command from a remote device by: controlling the imaging device to capture one or more images within the wash tub; initiating communication of the captured one or more images to the remote device for viewing on the remote device; waiting to receive a confirmation from the remote device; and starting the wash cycle in response to receiving the confirmation from the remote device.

A washing appliance comprising a liquid container, a liquid level indicator unit configured to provide data indicative of a liquid level in the liquid container, a drain conduit, and a drain pump. The washing appliance further comprises a control arrangement configured to operate the drain pump during a first time period, control the drain pump to a standstill during a second time period following the first time period, and monitor a change of the liquid level during the second time period using data from the liquid level indicator unit. Also provided are a method of detecting an operational error in a washing appliance, a computer program, a computer-readable medium, and a control arrangement for a washing appliance.