To provide an outdoor unit of a refrigeration apparatus, which has a plurality of compressors and can continuously operate even if there is an error in connection of sensor wiring of the compressor.
An outdoor unit of an air conditioner 1 includes compressors 21, 22, and a control board 30 having temperature sensor terminals 36a, 36b to which temperature sensors 51, 52 and signal cables 33a, 33b are connected. A temperature sensor provided in each compressor measures a temperature varying with an operation state of the each compressor. The control board includes a compressor control section 38c which obtains compressor operation states, a signal reception section 38b which receives signals of the first and second temperature sensor terminals as first and second reception signals, a comparison section 38d which compares temperatures using the reception signals, a determination section 38e which determines a signal cable wrong connection based on the compressor operation state and a comparison result, and a reading-converting section 38g which reads the second and first reception signals for the signals of the first and second temperature sensor terminals in case of the wrong connection.
OKA YUSUKE
HATA JUNICHI
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