| 摘要 |
PURPOSE: A method for controlling a refrigerant amount of an air conditioner for both cooling and heating is provided to prevent overload of a compressor or frosting of heat exchangers of indoor and outdoor units by controlling an amount of circulating refrigerant, thereby maximizing the cooling and heating efficiency. CONSTITUTION: A method for controlling a refrigerant amount of an air conditioner for both cooling and heating includes the steps of advancing to a cooling or heating operation mode according to the determination of the mode(40,41,44), determining whether a pipe temperature is lower or higher than a predetermined temperature by sensing the pipe temperature at a suction hole of a compressor which varies depending to the high or low degree of ambient air temperature(42,45), and controlling a circulation refrigerant amount according to the determined lower or higher temperature of the pipe by controlling the opening or closing of a solenoid valve of an expansion valve(43,46).
|
