| 摘要 |
An air conditioner where, in refrigerant charging performed by using a refrigerant container, the fact that the refrigerant container is empty can be known without using a weigher etc. The container (90) containing the refrigerant is used to fill the air conditioner (1) with the refrigerant. The air conditioner (1) has a refrigerant circuit (10), a charge port (P), a downstream temperature sensor (92), an outdoor control section (37), and a display section (9). The refrigerant circuit (10) is formed by connecting a compressor (21) and an outdoor heat exchanger (23) and also connecting indoor expansion valves (41, 51) and indoor heat exchangers (42, 52). The charge port (P) is used to place the refrigerant from the container (90) into the refrigerant circuit (10). The downstream temperature sensor (92) is provided in the refrigerant circuit (10), at a position near the charge port (P). The outdoor control section (37) determines whether the container (90) is empty based on variation in either the temperature detected by the downstream temperature sensor (92) or the degree of superheating. The display section (9) emits an output when the container (90) is determined to be empty by the outdoor control section (37).
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