DC Inverter Multi
VRF Service Manual
73
CONTROL
C. Connection of communication modules
COM 1 of communication module can connect with indoor and outdoor unit. The two COM2 can connect with other
communication module or centralized controller. As shown in the following gure:
D. Connection between communication module and indoor and outdoor units
According to the net diagram, connect the communication line between indoor unit and outdoor unit. Then cut off the
communication line between the mainboards of indoor unit and outdoor unit, as shown below.
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