Air conditioning system, refrigerant sensor device, and method for preventing incorrect connection

Abstract

The air conditioning system comprises an outdoor unit, an indoor unit, a refrigerant circuit connecting the outdoor unit and the indoor unit with refrigerant piping and through which a flammable refrigerant circulates, a refrigerant sensor that detects leakage of the flammable refrigerant from the refrigerant circuit and outputs a monitoring signal indicating that the refrigerant sensor is monitoring leakage of the refrigerant under normal conditions and outputs a leakage signal indicating that a refrigerant leakage has been detected when the refrigerant sensor detects a refrigerant leakage, and a control unit that controls the operation of the refrigerant circuit and outputs an alarm indicating that the refrigerant has leaked when the leakage signal is received, and the refrigerant sensor device outputs an identification signal corresponding to the type of flammable refrigerant to the control unit for a certain period of time after startup.

Images