Patent ID: 11898783
Assignee: DAIKIN INDUSTRIES, LTD.
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 3:
4. The performance degradation diagnosis system for a refrigeration cycle apparatus according to claim 1, wherein
the refrigeration cycle apparatus further includes a heat-source-side fan configured to supply air to the heat-source-side heat exchanger,
the performance degradation factors include soiling of the heat-source-side heat exchanger, and
in a case in which the first determining unit determines performance degradation of the refrigeration cycle apparatus due to the soiling of the heat-source-side heat exchanger, the control unit is configured to cause the refrigeration cycle apparatus to execute at least one of
an operation of increasing the number of rotations of the compressor, and
an operation of decreasing the number of rotations of the heat-source-side fan,
to control the operation condition of the refrigeration cycle apparatus, which is operating, to the operation condition suitable to determine performance degradation of the refrigeration cycle apparatus.