Communication Network Connection - Gree DC Inverter Multi VRF Service Manual

DC INVERTER MULTI VRF
14 System setting
15 Control mode
16 Displays of soft address
Instruction to display interface:
System Setting: Including Address Setting and other functions, and it is set when installation personnel are adjusting
units. It is not recommended that users operate it. The usage of this function requires password.
Address Setting: Since characters from 01 to 64 are fixed as the addresses of controlling communication modules
displayed by central control (hereinafter called soft addresses), and the addresses of communication modules
themselves (hereinafter called hard addresses) are value from 0~254, thus there is address matching problem between
central control and controlled communication module. In order to solve this problem, address mapping setting is
required to be conducted before project adjusting!

6.4 Communication Network Connection

6.4.1 Communication network
The following is a brief sketch of communication net of multi variable units:
As shown in figure, the "\" at A are parting lines for communication net. Left side of the "\" is the communication net
between central control and communication module while the right side is that between multi variable outdoor unit and
indoor units. The 2 nets are individual nets.
Before normal use of central control, do conduct addresses setting and adjusting to communication system by
installation personnel. Only after that can the central control offered to be used by user.
Setting operation mode of central control. It should be completed by installation
personnel, but not for users.
Displays 3 control modes of Central, Single and Select controls
When Indoor on, addresses of present online indoor unit is displayed;
When domain on, soft address of present online communication module is
displayed;
Specific location of controlled indoor unit can only be ascertained when soft
address fits Project Installation List.
CONTROL
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