GREE ELECTRIC GWC09QB-D3DNA6E/O Service Manual page 29

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