36
Installation and Maintenance
Service Manual
(12) Starting-up Failure Protection for Compressor
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(13) Out-of-Step Protection for Compressor
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(14) Voltage Abnormity Protection for DC Bus
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1.Over-High Voltage Protection for DC Bus:
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2.Over-Low Voltage Protection for DC Bus:
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3.To detect voltage abnormity protect for DC bus when getting electricity:
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(15)Abnormity Protection for Four-way Valve
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(16) PFC Protection
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(17) Failure Detection for Sensor
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5. Disposal for Sensor Protection
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