GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 
134 
When the project number conflict occurs, you can use the communicator or remote controller to 
revise project numbers and solve the conflict. See the manual of the communicator or remote 
controller for the method.   
③Setting of auto project number deviation on ODU's main board (recommended) 
You can set auto IDU project number deviation via the ODU's main board as follows: 
(1) After the whole system is commissioned, short press SW3 on the controlling unit and the 
system will enter the standby status as follows: 
(2)  Press  SW2  (▼)  on  the  controlling  unit  and  select  n5.  Short  press  SW7  to  show  the 
following information: 
 
 
 
 
 
(3) 
When project number deviation is to be confirmed, short press SW7 confirmation button 
to enter the project number deviation status as shown in the following: 
IDU project numbers in all systems will automatically deviate. The conflict will be solved in about 
1 minute and the system will work properly.   
The automatic deviation function only works when it is enabled on the controlling unit in the 
system, of which the centralized control address is 00000.   
Note: When there are only a few conflicting IDUs, manual setting is recommended. This method 
only applies to conflicting IDUs and does only affect other IDUs' project numbers.   
In case of many conflicting IDUs, auto deviation is recommended. This method is faster, but may 
change project numbers of normal IDUs. This method applies for the first commissioning after 
installation.