CONTROLLING METHOD FOR A DISHWASHER

The present invention relates to a dishwasher (1) for washing the dishes or the cooking utensils by spraying washing water and steam and a controlling method therefor. The dishwasher (1) comprises a plurality of spray arms (13, 14, 15) for spraying washing water, a steam nozzle (195) for spraying steam, a sump (100) for storing the washing water, and a washing pump (150) for sending the washing water stored in the sump (100) to the tub (12). The method of controlling the dishwasher includes: a steam supply step of supplying washing water to the sump (100) from an external water source; and a steam generation step of maintaining a water level of the washing water existing inside the washing pump (150) at a certain water level or higher and heating the washing water to form steam.