Gree GMV5 Series Service Manual page 113

Step 6: Find the module with its address being ―01‖, which is the master unit. On the master unit, press
and hold "SW7" for more than five seconds to enter unit commissioning.
Step 7: Wait for the unit to automatically operate commissioning steps 01 and 02.
Exception 1: If the master unit is incorrectly set in step 01, the following faults are displayed in step 01:
Commissioning
Code
LED1
Progress
Code
db
01_Master
unit
db
settings
db
According to the above fault symptoms, set the master unit again by referring to the setting method in
the "Master Unit Setting DIP Switch (SA8_MASTER-S)" section. Then enter unit commissioning again.
Exception 2: If no master IDU is detected in step 02, the following faults are displayed in step 02:
LED1
Function Code Display Mode Current Progress Display Mode Current Status Display Mode
db
In this case, all buttons are invalid. Users can set the master IDU through the commissioning software,
wired controller, or commissioning remote controller within one minute. If no master IDU is set within one
minute, the system will automatically set a master IDU. Then the system automatically enters the next
step.
Step 7: When the unit runs to step 03, users need to manually confirm the number of outdoor modules.
The main board of each module is displayed as follows:
Progress
03_Module quantity
confirmation
If the displayed quantity is consistent with the number of actually connected modules, press "SW7" on
the master unit to confirm. The main board is displayed as follows and the unit automatically enters
commissioning step 04.
Progress
03_Module quantity
confirmation
GMV5 DC INVERTER VRF UNITS SERVICE MANUAL
Progress Code
LED2
Display Display
Status Code Status
On 01 On
On 01 On
On 01 On
On 02
Commissioning Code
LED1
Display
Code Status
db On
Commissioning Code
LED1
Display
Code Status
db On
Status Code
LED3
Display
Code Status
The system does not set any
master unit, and a master unit
CC On should be set.
The system sets more than
two master units, and a master
CF On unit should be set again.
The system successfully sets
a master unit and
automatically enters the next
OC On step.
LED2
On
Progress Code
LED2
Display
Code Status
03 On
Progress Code
LED2
Display
Code Status
03 On
110
Meaning
LED3
L7 Blinking
Status Code
LED3
Code Display Status
Module
quantity Blinking
Status Code
LED3
Code Display Status
OC On