Gree GMV5E Series Service Manual page 111

GREE
and the wired controller of each IDU displays "A0", it indicates that the unit is in non-commissioning
status.
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 Display Status Code Display Status Code Display Status
db
01_Master db
unit 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
Display Mode
Function Code
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 8: 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"
Progress Code
LED2
On 01 On
On 01 On
On 01 On
Current Progress
On
02
Commissioning Code
LED1
Code Display Status
db On
GMV5E DC INVERTER VRF UNITS SERVICE MANUAL
Status Code
LED3
The system does not set any master
CC On
unit, and a master unit should be set.
The system sets more than two master
CF On units, and a master unit should be set
again.
The system successfully sets a
OC On master unit and automatically enters
the next step.
LED2
Display Mode
On
Progress Code
LED2
Code Display Status
03 On
107
Meaning
LED3
Current Status Display Mode
L7 Blinking
Status Code
LED3
Code Display Status
Module quantity Blinking