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Notes:
(a) As shown in the diagram above, CN33 and CN25 of all modules are connected by a three-core four-
pin shielded communication line whose ground wires of both ends will be linked to the terminal near
the main board.
(b) As shown in the diagram above, CN4 on the display panel is connected to a CN25 on a main board
of any unit by a four-core shielded communication line whose ground wire will be linked to the
terminal near the main board.
(c) The power lines should be connected to L1, L2, L3, and N at XT1 through a piece of four-core rubber
sleeve cable as shown in the figure above.
(d) There are two solutions for remote monitoring.
• Install the remote monitoring software at the PC.
• Based on GREE provided Modbus protocol, the user can do second development to this protocol.
Note: those enclosed by the dotted lines indicate the remote monitoring equipment. When the quantity
of the display panel exceeds 30 or length of the communication line exceeds 800m, extra photoelectric
relay is required. The photoelectric relays, communication lines (class 5 twist pairs), converters are
optional. PC should be prepared by the user themselves.
6.6 Setup of DIP switches on the motherboard
Five-bit DIP switches are used for indicating hardware address (1~16) of modules, with module No.
displayed in turn on the panel as Module 1, Module 2, ..., Module 16. DIP switches 1,2,3,4 and 5 are
binary codes, with 1 for the lowest bit and 5 for the highest bit. Comparison drawings are as follows
(Caution: only in the condition of power supply shutoff can DIP switches be set):
Module 1
Module 5
Module 9
Module 13
Note: the black block represents where the projecting lever of the DIP switch is.
A Series Inverter Modular Air-cooled Chiller (Heat Pump)
Module 2
5
5
Module 6
Module 7
5
5
Module 10
Module 11
5
5
Module 14
Module 15
5
5
30
Module 3
Module 4
5
Module 8
5
Module 12
5
Module 16
5
5
5
5
5
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