GMV5 DC INVERTER VRF UNITS SERVICE MANUAL
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Figure 5 Communication cable connection for the single-module system
Figure 6 Communication cable connection for the multi-module system
Note:
a) If there are multiple modules for the modular ODU, the master unit must be the first ODU
module on the communication cable and cannot be connected to the IDU. (The master unit is
set by SA8 on the main board of the ODU.)
b) If there are multiple modules for the modular ODU, the IDU must be connected to the slave
module of the last ODU. (The slave unit is set by SA8 on the main board of the ODU.)
c) The communication cable and power cable must be laid separately to avoid interference.
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