The compressor overheating during the operation of the chiller is a problem that cannot be ignored. If it is difficult to solve this problem of the chiller, it will affect its service life. We should take this problem seriously and solve it. The chilled water unit is an essential product in industrial production. In the long run, the compressor of the chiller will overheat and cause the compressor to fail to operate, that is, the chiller will fail.