Dishwasher and control method thereof
The present disclosure relates to a method of controlling a dishwasher. The method of controlling a dishwasher of the present disclosure includes steps of: detecting a temperature of air supplied to a tub through a heating duct by a temperature sensor; operating a supply fan which supplies outdoor air to the heating duct; operating a heater disposed in the heating duct; determining whether the supply fan and the heater are normally operating; and determining that the supply fan and the heater are normally operating, when a temperature change detected by the temperature sensor is within a first set range.
1 . A method of controlling a dishwasher including a tub defining a washing space, a supply fan configured to supply outdoor air to the tub, a heating duct configured to guide the outdoor air towards the tub, a heater configured to heat the outdoor air in the heating duct, and a temperature sensor configured to determine a temperature of the outdoor air from the heating duct, the method comprising:
measuring, by the temperature sensor, a change of a temperature of air supplied to the tub through the heating duct;
operating the supply fan configured to supply outdoor air to the heating duct; operating the heater disposed at the heating duct;
determining, based on a slope value of the change of the temperature detected by the temperature sensor being within a first set range, that the supply fan and the heater are normally operating; and
determining, based on the slope value of the change of the temperature detected by the temperature sensor being outside the first set range, at least one of a failure of the supply fan or a failure of the heater,
wherein the failure of the supply fan and the failure of the heater are determined based on whether the slope value of the change of the temperature detected by the temperature sensor is within a second set range, wherein the second set range corresponds to temperature values lower than those of the first set range, and
wherein the failure of the supply fan is determined based on the slope value of the change of the temperature detected by the temperature sensor being within the second set range.
2 . The method of claim 1 , further comprising:
generating, based on the slope value of the change of the temperature detected by the temperature sensor being outside of the first set range, an error code through an output unit.
3 . The method of claim 1 , further comprising:
stopping, based on the supply fan and the heater normally operating, operation of the supply fan and the heater after a predetermined drying time.
4 . The method of claim 1 , further comprising:
determining, based on the slope value of the change of the temperature detected by the temperature sensor not being within the first set range and not being within the second set range, the failure of the heater.
5 . The method of claim 1 , wherein the failure of each of the supply fan and the heater is determined based on a resistance value of the temperature sensor.
6 . The method of claim 5 , further comprising:
determining, based on the resistance value of the temperature sensor being smaller than a set resistance value, the failure of the supply fan.
7 . The method of claim 1 , further comprising:
determining the failure of each of the supply fan and the heater is performed, after a set time from the step of determining whether the supply fan and the heater are normally operating.
8 . The method of claim 1 , further comprising:
generating, based on determining the failure of at least one of the supply fan or the heater, an error code through an output unit; and
stopping operation of the heater and the supply fan.
9 . The method of claim 8 , further comprising:
stopping, based on determining the failure of at least one of the supply fan or the heater, the operation of the heater and the supply fan; and
heating washing water received in a sump disposed below the tub and supplying steam to the tub.