GREE Photovoltaic Direct-driven Inverter Multi VRF Units
176
Troubleshooting:
2.3.4.27 “C0” IDU and ODU, IDU wired controller communication error
Error display:
ODU mainboard, IDU wired controller and IDU receive light board will
display
Error judgment condition and method:
If no communication between ODU and IDU or between IDU and wired controller in continuous 30s,
report the error.
Possible reason
■Communication wire is connected improperly or loose
■Communication wire is cut off
■Communication wire is in poor connection
■Connected wired controller quantity or address setting is improper
■Controller is abnormal
Troubleshooting:
If C0 isn’t displayed on the ODU main control board, please check the network between IDU and
wired controller; if ODU main control board, IDU light board and wired controller all report C0, please
check the network between ODU and IDU and the network between IDU and wired controller; if only
wired controller reports C0, please check the network between IDU and wired controller and the wired
controller quantity and address settings.
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