| abstract |
An object of the present invention is to detect at an early stage leakage of a refrigerant containing flammable 1,1,2-trifluoroethylene. A heat pump device that uses a refrigerant containing 1,1,2-trifluoroethylene and includes an indoor unit, an outdoor unit, and a pipe that connects the indoor unit and the outdoor unit. And CO2 detection means for detecting the concentration of CO2 can be detected to detect leakage of 1,1,2-trifluoroethylene from the heat pump device. [Selection] Figure 1 |