Method for operating a commercial cooking device (100; 300; 400; 600) having different operating modes (720, 730, 740), comprising: - a housing (105, 106, 107, 108), - at least one heating means (121, 130), - a main cooling fan, - at least one auxiliary cooling fan, - at least one in particular electrical component to be cooled in a first space directly impinged by the main cooling fan, - at least one further preferably electrical component (570A, 570B) to be cooled in a second space (120, 150) not directly impinged by the main cooling fan, and - a temperature sensor which is arranged in the housing (105, 106, 107, 108), wherein the method comprises the following steps: - establishing and setting of limit temperatures (T1, T2 to 720; T3 to 730; T4 to 740) assigned to the operating modes (720, 730, 740), wherein a cooling process is initiated in exceess of this; - determining the activated operating mode (720, 730, 740), - determining whether a temperature dependent on the activated operating mode, preferably in the first room, exceeds the limit temperature (T1, T2; T3; T4) assigned to the activated operating mode (720, 730, 740), wherein the determination of the the temperature depending on the activated operating mode takes place by means of the temperature sensor arranged in the housing (105, 106, 107, 108), - activating the main cooling fan if it is determined that the respective limit temperature (T1, T2; T3 or T4) has been exceeded, - wherein the auxiliary cooling fan is additionally activated if it is determined that the component in the second room is already activated or is about to be activated for a short time, - whereas only the auxiliary cooling fan is activated if it is determined that the component in the second room is already activated or is about to be activated for a short time, but the limit temperature assigned to this operating mode in the assigned operating mode is determined not to be exceeded. - a housing (105, 106, 107, 108), - at least one heating means (121, 130), - a main cooling fan, - at least one auxiliary cooling fan, - at least one in particular electrical component to be cooled in a first space directly impinged by the main cooling fan, - at least one further preferably electrical component (570A, 570B) to be cooled in a second space (120, 150) not directly impinged by the main cooling fan, and - a temperature sensor which is arranged in the housing (105, 106, 107, 108), wherein the method comprises the following steps: - establishing and setting of limit temperatures (T1, T2 to 720; T3 to 730; T4 to 740) assigned to the operating modes (720, 730, 740), wherein a cooling process is initiated in exceess of this; - determining the activated operating mode (720, 730, 740), - determining whether a temperature dependent on the activated operating mode, preferably in the first room, exceeds the limit temperature (T1, T2; T3; T4) assigned to the activated operating mode (720, 730, 740), wherein the determination of the the temperature depending on the activated operating mode takes place by means of the temperature sensor arranged in the housing (105, 106, 107, 108), - activating the main cooling fan if it is determined that the respective limit temperature (T1, T2; T3 or T4) has been exceeded, - wherein the auxiliary cooling fan is additionally activated if it is determined that the component in the second room is already activated or is about to be activated for a short time, - whereas only the auxiliary cooling fan is activated if it is determined that the component in the second room is already activated or is about to be activated for a short time, but the limit temperature assigned to this operating mode in the assigned operating mode is determined not to be exceeded. - establishing and setting of limit temperatures (T1, T2 to 720; T3 to 730; T4 to 740) assigned to the operating modes (720, 730, 740), wherein a cooling process is initiated in exceess of this; - determining the activated operating mode (720, 730, 740), - determining whether a temperature dependent on the activated operating mode, preferably in the first room, exceeds the limit temperature (T1, T2; T3; T4) assigned to the activated operating mode (720, 730, 740), wherein the determination of the the temperature depending on the activated operating mode takes place by means of the temperature sensor arranged in the housing (105, 106, 107, 108), - activating the main cooling fan if it is determined that the respective limit temperature (T1, T2; T3 or T4) has been exceeded, - wherein the auxiliary cooling fan is additionally activated if it is determined that the component in the second room is already activated or is about to be activated for a short time, - whereas only the auxiliary cooling fan is activated if it is determined that the component in the second room is already activated or is about to be activated for a short time, but the limit temperature assigned to this operating mode in the assigned operating mode is determined not to be exceeded.