AIR-CONDITIONING DEVICE

摘要

When indoor units (C to E) are performing a cooling operation, an air-conditioning apparatus (100) controls third flow passage switching valves (a first solenoid valve (11a), a second solenoid valve (11b), a third solenoid valve (11c), and a fourth solenoid valve (11d)) so that the number of intermediate heat exchangers operating as evaporators is greater than in a cooling main operation. During the cooling main operation, a target value for the suction pressure or the evaporating temperature at a compressor (1) is set equal to or lower than that in the case where the indoor units (C to E) are performing the cooling operation, and the frequency of the compressor (1) and the capacity of a heat-source-side heat exchanger (3) are controlled.