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

Claim 10:
11. The performance degradation diagnosis system for a refrigeration cycle apparatus according to claim 3, wherein
the refrigeration cycle apparatus further includes
a use-side fan configured to supply air to the use-side heat exchanger and
a filter configured to remove a foreign substance from the air to be supplied to the use-side heat exchanger,

the performance degradation factors include at least one of soiling of the use-side heat exchanger and soiling of the filter, and
in a case in which the first determining unit determines performance degradation of the refrigeration cycle apparatus due to at least one of the soiling of the use-side heat exchanger and the soiling of the filter, 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 use-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.