GREE Duct type Ducted Type Split Air-Conditioner Units
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3.3.2.3 Operation Instruction
(1) Power LED:a red light. If the red light is on, it indicates normal power supply. If the red light is off,
it indicates the power supply of converter is not normal.
(2) Communication LEDs:yellow lights. When converter is working and the computer is transmitting
data, the TX data transmitting light will be flickering. When units are uploading data to the
computer, the RX data receiving light will be flickering.
(3) When converter is under RS485 data transferring mode, the function LED of RS485 to USB will
be on.
(4) When converter is under CAN data transferring mode, the function LED of CAN to USB will be
on.
(5) When converter is under HBS data transferring mode, the function LED of HBS to USB will be
on.
(6) USB interface:connect USB data wire.
(7) CAN interface:When converter is under CAN communication mode, connect air conditioner’s
CAN data interface. CAN interface exhibits no polarity (A and B are equal).
(8) HBS interface:When HBS converter is under HBS communication mode, connect air
conditioner’s HBS data interface. HBS interface exhibits no polarity (This interface is not yet
available for Gree debugger and the monitoring software).
(9) RS485 interface:When RS485 converter is under RS485 communication mode, connect air
conditioner’s RS485 data interface. RS485 interface exhibits polarity and terminal A and B are
different.
3.3.2.4 Installation notice
(1) Install indoors.To avoid collision,it is suggested to place it in the monitoring room together with
the computer.
(2) No need of power supply.Power is supplied through computer’s USB interface.
3.3.3 Communication Board
Communication board is mainly used for transferring data.It functions similar with a patching board.
Provided that units are far away from the monitoring computer,communication board can be used for
connection.
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