GREE Photovoltaic Direct-driven Inverter Multi VRF Units
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2.3.4.28“C2” main control and inverter compressor drive communication error
Error display:
ODU mainboard, IDU wired controller and IDU receive light board will
display
Error judgment condition and method:
If ODU hasn’t received inverter compressor drive board data in continuous 30s, report the error.
Possible reason
■Communication wire between ODU mainboard inside module and inverter compressor drive board
is not connected properly
■Inverter compressor drive board is abnormal
■Mainboard is abnormal
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