Patent ID: 8720464

Claim:
A method for controlling a water supply amount in a refrigerator comprising: receiving a target water supply amount; initiating a water supply device to supply water based on the target water supply amount; beginning to count a water supply duration for which the water supply device supplies the target water supply amount; determining whether a water supply amount measurement unit is operating normally, the water supply amount measurement unit being configured to measure an amount of water supplied by the water supply device; in response to a determination that the water supply amount measurement unit is operating normally: determining a measured water supply amount based on a signal from the water supply amount measurement unit, comparing the determined measured water supply amount to the target water supply amount; determining whether the measured water supply amount meets the target water supply amount based on comparison results; and in response to a determination that the measured water supply amount meets the target water supply amount, stopping the water supply device from supplying water based on the target water supply amount and storing a signal from the water supply amount measurement unit and information regarding a water supply duration; and in response to a determination that the water supply amount measurement unit is operating abnormally: deriving a target water supply duration based on the target water supply amount and a correlation between stored water supply amount information and stored water supply duration information, comparing the counted water supply duration to the derived target water supply duration; determining whether the counted water supply duration meets the derived target water supply duration based on comparison results; and in response to a determination that the counted water supply duration meets the target water supply duration, stopping the water supply device from supplying water based on the target water supply amount.