Patent ID: 8569660

Claim:
A cooking appliance comprising: a heat source; an input unit configured to input a plurality of operational modes of the heat source, wherein the plurality of operational modes is a plurality of cleaning modes for cleaning a cavity of the cooking appliance; a control unit configured to operate the heat source in accordance with a selected cleaning mode input through the input unit; a memory that stores operational conditions of the heat source and reference times for the respective cleaning modes; and an informing unit showing a time according to the selected cleaning mode; wherein the input unit comprises a selection unit configured to permit a user to select one of the plurality of cleaning modes, wherein when the cleaning mode is selected, the heat source is operated, wherein the control unit stops the operation of the heat source when an operational time of the heat source reaches a predefined operation stop time, wherein the control unit determines whether a reference time corresponding to the selected cleaning mode has passed after stopping the operating of the heat source, wherein the control unit controls the informing unit to show a signal after determining that a reference time has passed after stopping the operating of the heat source, and wherein an amount of the reference times are different for each of the plurality of cleaning modes.