Air conditioner having water nozzle cleaning system and water nozzle cleaning method used therein

A water nozzle cleaning method, comprising:

• a driving starting operation of starting driving of the air conditioner;
• a water supplying operation of spraying water through a water nozzle to a heat exchanger;
• a driving terminating operation of terminating driving of the air conditioner;
• and
• a cleaning operation of spraying filtered water to the heat exchanger through the water nozzle by passing through a water filter,
• wherein the water supplying operation includes measuring and storing a first measured pressure, the pressure of unfiltered water passing through a first water line and subsequently through a third water line, with a pressure gauge, and
• wherein the cleaning operation includes measuring a second measured pressure, the pressure of the filtered water passing through a second water line and a water filter and subsequently through a third water line, with the pressure gauge, and the cleaning operation is performed until the first measured pressure and the second measured pressure are equalized.

A water nozzle cleaning method, comprising:

• a driving starting operation of starting driving of the air conditioner;
• a water supplying operation of spraying water through a water nozzle to a heat exchanger;
• a driving terminating operation of terminating driving of the air conditioner;
• and
• a cleaning operation of spraying filtered water to the heat exchanger through the water nozzle by passing through a water filter,
• wherein the water supplying operation includes measuring a first measured pressure, the pressure of the water passing through a first water line and subsequently through a second water line, with a pressure gauge, and the water supplying operation is performed during a first cleaning time, the time at which the first measured pressure reaches reference pressure determined by a user, and
• wherein the cleaning operation is performed for the first cleaning time.