Apparatus for treating laundry and controlling method thereof

An apparatus for treating laundry, comprising:

• a cabinet;
• a tub located in the cabinet;
• a drum located in the tub and configured to receive laundry;
• a motor located in the cabinet and configured to drive the drum;
• an induction heater located at the tub and configured to heat the drum by induction;
• a temperature sensor configured to measure a temperature inside the drum;
• a current sensor configured to measure a current applied to the motor;
• and
• a controller configured to:
• set a condition for determining that a laundry load is a normal load or an abnormal load;
• drive the induction heater in a normal dry mode;
• determine, with reference to the set condition and based on at least one of a temperature increasing rate of the drum or fluctuation of the current applied to the motor, whether the laundry load is the normal load or the abnormal load during driving of the induction heater in the normal dry mode;
• and
• control, based on a determination that the laundry load is in the abnormal load, the induction heater in an abnormal dry mode,
• wherein an output of the induction heater in the abnormal dry mode is less than an output of the induction heater in the normal dry mode.