Abstract: A household appliance and method for determining if an amount of deposition of scale exceeds a reference amount of deposition of scale may include obtaining a start temperature of a heating element, turning on the heating element at first point in time to heat the liquid from the liquid start temperature and simultaneously starting measuring a time interval from the first point in time, monitoring, at a second point in time, a behavior of the measured temperature of the heating element during heating of the liquid in the heating space in order to determine if a boiling temperature of the liquid has been reached, comparing the measured time interval with a reference heating duration and determining if the amount of deposition of scale on the heating element exceeds the reference amount of deposition of scale.

Abstract: A method for controlling operation of a household appliance may include supplying a liquid to a first space, determining a first behavior(TB1) of temperature measured by a first temperature sensor during supplying of the liquid to the first space, supplying the liquid to a second space by activating a pump in order to transport the liquid from the first space to the second space, determining a second behavior (TB2) of temperature measured by a second temperature sensor during supplying of the liquid to the second space, and determining if a sufficient amount of the liquid has been supplied to the second space or not based on the second behavior (TB2) evaluated with respect to the first behavior (TB1). A household appliance may also be provided.

Abstract: A method for removing a deposition of scale on a heating element may include turning on the heating element to heat the liquid in the heating space, determining a first value (Tv1) of temperature of the heating element and/or a first time period (tp1) during heating of the liquid. The method may further include turning off the heating element and turning on the heating element at a second value (Tv2) of temperature of the heating element and reheating the liquid in the heating space until temperature of the heating element reaches a third value (Tv3) related to the first value (Tv1) and/or until a second time period (tp2) related to the first time period (tp1) is reached. A household appliance may also be provided.

Abstract: A method for controlling operation of a household appliance may include supplying a liquid to a first space, determining a first behavior(TB1) of temperature measured by a first temperature sensor during supplying of the liquid to the first space, supplying the liquid to a second space by activating a pump in order to transport the liquid from the first space to the second space, determining a second behavior (TB2) of temperature measured by a second temperature sensor during supplying of the liquid to the second space, and determining if a sufficient amount of the liquid has been supplied to the second space or not based on the second behavior (TB2) evaluated with respect to the first behavior (TB1). A household appliance may also be provided.

Abstract: A household appliance and method for determining if an amount of deposition of scale exceeds a reference amount of deposition of scale may include obtaining a start temperature of a heating element, turning on the heating element at first point in time to heat the liquid from the liquid start temperature and simultaneously starting measuring a time interval from the first point in time, monitoring, at a second point in time, a behavior of the measured temperature of the heating element during heating of the liquid in the heating space in order to determine if a boiling temperature of the liquid has been reached, comparing the measured time interval with a reference heating duration and determining if the amount of deposition of scale on the heating element exceeds the reference amount of deposition of scale.