Gree GMV-120WM/B-F

GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL
139
detection
opened.
Step 15: Unit commissioning step 11 is manually calculated refrigerant perfusion status.
Without operations, the system gives a function prompt and automatically enters the next step.
Step 16: Unit commissioning step 12 is unit commissioning startup confirmation.
To avoid enabling the unit before all preparations are completed, it is required to confirm again
whether to enable the unit.
If the master unit is displayed as follows, it indicates that the unit is waiting for enabling confirmation.
Progress
Commissioning Code
Progress Code
Status Code
Meaning
LED1
LED2
LED3
Code
Display
Status
Code
Display
Status
Code
Display
Status
12_Unit
commissioning
startup
confirmation
db
On
12
On
AP
Blinking
The system waits for
a unit
commissioning
startup command.
If it is confirmed to enable the unit, press "SW7". The main board is displayed as follows and the unit
automatically enters the next commissioning step.
Progress
Commissioning Code
Progress Code
Status Code
Meaning
LED1
LED2
LED3
Code
Display
Status
Code
Display
Status
Code
Display
Status
12_Unit
commissioning
startup
confirmation
db
On
12
On
AE
On
The unit is set to
manually-calculated
refrigerant perfusion
commissioning status.
Step 17: After unit startup confirmation, the system automatically selects the cooling or heating
mode according to the environment temperature.
A. If the system selects the cooling mode, the main board is displayed as follows:
Progress
Commissioning Code
Progress Code
Status Code
Meaning
LED1
LED2
LED3
Code
Display
Status
Code
Display
Status
Code
Display
Status
15_Cooling
commissioning
operation
db
On
15
On
AC
On
The system is in
cooling-mode
commissioning operation
(the system automatically
selects the commissioning
operation mode without
needing manual settings).
db
On
15
On
Corres
pondin
g fault
code
On
A fault occurs on the
cooling-mode
commissioning operation.
db
On
15
On
J0
On
A fault occurs on other
modules during the
cooling-mode
commissioning operation.
db
On
15
On
U9
On
A fault occurs on ODU
pipes.
db
On
15
On
XXXX/
U8
On
The system detects pipe
failure of IDU. "XXXX"
indicates the project
number of the faulty IDU.