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2. When operating frequency of one compressor rises up to the 75% of the highest frequency, two compressors in
the outdoor unit 1 will work at the same time.
3. When the operation output ratio of the outdoor unit 1 (actual operating frequency/total operating frequency)
continue to rise up to the 75%, two compressors in the outdoor unit 2 will also work at the same time.
4. When the total operation output ratio of the outdoor unit 1 and outdoor unit 2 (actual operating frequency/total
operating frequency) rises up to the 75%, two compressors in the outdoor unit 3 will also work at the same time.
5. When the total operation output ratio of the outdoor unit 1, outdoor unit 2 and outdoor unit 3 declines to the 25%,
two compressors in the outdoor unit 3 will stop at the same time, outdoor unit 1 and outdoor unit 2 continue to
operate.
6. When the total operation output ratio of the outdoor unit 1 and outdoor unit 2 declines to the 25%, two
compressors in the outdoor unit 2 will stop at the same time, and the two compressors in outdoor unit 1 continue to
operate.
7. When the total operation output ratio of the outdoor unit 1 declines to the 25%, the No. 2 compressor of outdoor
unit 1 will stop and the No. 1 compressor continues to operate.
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