Patent ID: 8844081

Claim:
A method of controlling opening of a door of a laundry treatment machine, the method comprising: (a) detecting a door opening signal during an operation of a laundry treatment machine; (b) primarily measuring a temperature in a tub and measuring a water level in the tub; (c) determining that the measured temperature is higher than a reference temperature; (d) determining that the measured water level is higher than a reference water level; (e) determining an amount of wash water to be discharged from the tub when the measured temperature is determined to be higher than the reference temperature and the measured water level is determined to be higher than the reference water level; (f) determining an amount of cold water to be supplied into the tub, (g) discharging the determined amount of wash water from the tub after determining the amount of cold water to be supplied, wherein the determined amount of wash water is determined by subtracting the reference water level from the measured water level in (b) and adding the determined amount of cold water; (h) supplying the determined amount of cold water to the tub after discharging the determined amount of wash water from the tub; (i) secondarily measuring the temperature in the tub and measuring the water level in the tub during the operation of the laundry treatment machine and after supplying the determined amount of cold water; (j) determining that the measured temperature in (i) is lower than the reference temperature and determining that the measured water level in (i) is lower than the reference water level; and (k) opening the door, based on the door opening signal, when the measured temperature in (i) is determined to be lower than the reference temperature and the measured water level in (i) is determined to be lower than the reference water level.