| 摘要 |
An outdoor unit control unit 200 has a defrosting operation condition table 300a that defines an activation rotational speed Cr in accordance with a total sum of rated capacity of indoor units 5a to 5c and a refrigerant pipe length that is lengths of a liquid pipe 8 or a gas pipe 9. The outdoor unit control unit 200 uses the total sum of the rated capacity of the indoor units 5a to 5c and refers to the defrosting operation condition table 300a, so as to determine the activation rotational speed Cr. Then, the outdoor unit control unit 200 activates a compressor 21 at the determined activation rotational speed Cr when starting a defrosting operation, maintains this activation rotational speed Cr for a predetermined time (one minute) from the start of the defrosting operation, and drives the compressor 21. |
