Communication Address Setting - Gree GMV-VQ280WM/C-X Owner's Manual

(2) If a communication wire is not long enough and needs to be connected with another wire by
peeling away its outer layer, crimp connection or soldering connection must be adopted.

3.9.4 Communication Address Setting

The indoor unit and outdoor unit adopt automatic addressing technology. It is not necessary to
manually set the address code. It only needs to set the main module and centralized control address
(set it when centralized control of multiple refrigeration systems is required).
3.9.5 Connection Methods and Procedure of Communication System
Communication between indoor， mode exchange box and outdoor units is connected via terminal
D1/D2 on the terminal block XT. Connection method for single-module and multi-module systems is
shown below:
Connection of communication for multi-module system and multi-module converter system
GMV Heat Recovery DC Inverter VRF
Fig.3.9.8
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