A method for determining the usage amount of detergent, and a dishwasher, a processor, a storage medium and a computer program product. The method for determining the usage amount of detergent includes acquiring an internal image of a dishwasher captured by an image acquisition device; according to the internal image, determining whether there is a target object in the dishwasher; when it is determined that there is a target object, generating a position table of the target object; determining the dirtiness of the target object according to the position table; and determining the usage amount of detergent for the dishwasher according to the dirtiness. The dirtiness of a target object needing to be cleaned in a dishwasher is determined by means of an image acquisition device, and the usage amount of detergent for the dishwasher is then determined according to the dirtiness.

A dishwasher appliance includes a tub; a door, a sensor, and an indicator. The dishwasher performs an operation including determining a completion of a washing cycle, turning on the indicator, accumulating a first value relating to a first characteristic and a second value relating to a second characteristic, comparing the first accumulated value against a first threshold value and the second accumulated value against a second threshold value, determining that at least one of the first or second accumulated value is greater than its respective threshold value, and implementing a responsive action after determining that the at least one of the first or second accumulated value is greater than its respective threshold value.

A dishwasher including a tub forming a washing chamber; a drying device disposed outside of the tub and including an inlet through which air from the washing chamber is introduceable, a flow channel in which air from the washing chamber introduced through the inlet flows, a fan that is operable to cause air from the washing chamber to be introduced through the inlet to flow in the flow channel, a heater in the flow channel to heat air in the flow channel, an outlet through which air in the flow channel is discharged to the washing chamber, and a temperature sensor between the heater and the outlet; and at least one processor configured to operate the fan based on a start of a drying cycle and to determine an initial operation time point of the heater during the drying cycle based on temperature detected by the temperature sensor.