GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL
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1.3.1.1 Unit Capacity DIP Switch (SA1_capacity)
The unit capacity DIP switch (SA1_capacity) has been set upon factory departure. It is unnecessary
to further set the DIP switch. In addition, users are not allowed to change the DIP switch settings.
Otherwise, the system may work abnormally or even the compressor may be damaged.
1.3.1.2 Centralized Control Address DIP Switch (SA2_Addr-CC)
The centralized control address DIP switch (SA2_Addr-CC) indicates the centralized control
address required when different refrigerating systems are controlled in a centralized manner. The default
factory setting is "00000".
If it is not required to use centralized control between multiple refrigerating systems, this DIP switch
can retain the factory settings without being changed.
If it is required to use centralized control between multiple refrigerating systems, set the DIP switch
according to the following methods:
1) The DIP switch must be set on the master unit. Otherwise, the setting is invalid.
2) On the same refrigerating system, the centralized control address DIP switch (SA2_Addr-CC) on
a non-master unit is invalid, and it is unnecessary to change the settings.
3) The centralized control address DIP switch (SA2_Addr-CC) on the master unit of a refrigerating
system must be set to ―0000
×
‖, and this system is the master system.
4) The centralized control address DIP switch (SA2_Addr-CC) on the master unit of other
refrigerating systems must be set as follows:
On the DIP switch, ―ON‖ indicates ―0‖ status and the opposite direction indicates "1‖ status. ―
×
‖
indicates invalid status.
5) The centralized control address DIP switch (SA2_Addr-CC) cannot be the same between
different refrigerating systems. Otherwise, address conflicts may occur and the unit cannot run properly.
1.3.1.3 Compressor Emergency Operation DIP Switch (SA3_COMP-E)
Corresponding to 2#-6# compressors, the compressor emergency operation DIP switch
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