Gree GMV-120WM/B-F

GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL
133
01:
Progress
Commissioning
Code
Progress Code
Status Code
Meaning
LED1
LED2
LED3
Code
Display
Status
Code
Display
Status
Code
Display
Status
01_Master
unit settings
db
On
01
On
CC
On
The system does not set any master
unit, and a master unit should be set.
db
On
01
On
CF
On
The system sets more than two master
units, and a master unit should be set
again.
db
On
01
On
OC
On
The system successfully sets a master
unit and automatically enters the next
step.
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
LED2
LED3
Function Code
Display Mode
Current Progress
Display Mode
Current Status
Display Mode
db
On
02
On
L7
Blinking
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
Commissioning Code
Progress Code
Status Code
LED1
LED2
LED3
Code
Display Status
Code
Display Status
Code
Display Status
03_Module quantity confirmation
db
On
03
On
Module
quantity
Blinking
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
Commissioning Code
Progress Code
Status Code
LED1
LED2
LED3
Code
Display Status
Code
Display Status
Code
Display Status
03_Module quantity confirmation
db
On
03
On
OC
On
If the displayed quantity is inconsistent with the number of actually connected modules, check
whether communication cables are correctly connected between modules in power-off status. Then
perform commissioning again.