GMV5 Home DC Inverter Multi VRF Units
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This function ensures the vacuum degree of the entire system during maintenance to prevent
operation functions of dead zones. Expansion valves and electromagnetic valves of the unit will be
enabled after this function is set.
(5) nO Conservation control 1
System conservation is set when conservation operations are required. The default factory
setting is capacity priority control mode. The system capacity may fall off after the conservation
mode is set.
Conservation control – invalid (factory
settings)
Conservation control – valid
(6) n3 Forcible defrosting operation
This function is set when forcible defrostin is required for the unit during maintenance. After
this function is enabled, the system automatically quits according to quitting conditions and then
automatically runs based on system conditions.
(7) n4 Conservation control 2
The highest capacity output limitation is set when users require forcibly limiting the system
power consumption. The setting scope is as follows:
Note: The coolin or heating effect may fall off after the capacity limitation is set.
(8) n5 Indoor unit project number offset
This function sets the IDU project number when multiple refrigerating systems are controlled
in a centralized manner (by using a remote monitor or centralized controller), avoiding the same
project number between different systems. If the project number is not set, project number
conflicts may occur among systems.
This function only needs to be set on the master system, which is the system with the
centralized control address SA2 DIP switch being ―00000‖. For details, see the ―Centralized
Control Address DIP Switch (SA2_Addr-CC)‖.
(9) n6 Fault inquiry
This function inquires historical faults of the system. Up to five historical faults can be
memorized in time order.
(10) n7 Parameter inquiry
This function inquires operation parameter of each module of the ODU in real time.
(11) n8 Indoor unit address inquiry
This function inquires addresses of all IDUs through one operation of the ODU.
(12) n9 Online IDU quantity inquiry
This function inquires the quantity of online IDUs through the ODU.
5.1.3 Function Setting Operations
Step 1: Open the commissioning window of the master unit panel;
Step 2: Power on the entire unit;
Step 3: Press ―SW3‖ on the master unit to enter the to-be-selected status of function settings.
By default, the master unit is displayed as below:
Users can select corresponding functions by pressing ―SW1 (UP)‖ or ―SW2 (DOWN)‖ on the
master unit, including:
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