Gree GMV-450WM/B-X Service Manual

GMV5 DC INVERTER VRF UNITS SERVICE MANUAL
114
detection
If the master unit is displayed as follows, it is required to check again whether the ODU valves are
completely opened.
Commissioning Code
Progress Code
Status Code
Meaning
Progress
LED1
LED2
LED3
Code
Display
Status
Code
Display
Status
Code
Display
Status
10_Pre-startup
ODU valve
status
detection
db
On
10
On
U6
On
It is required to check
again whether the ODU
valves are completely
opened.
After confirming that all valves are completely opened, press "SW7" to enter the next commissioning
step.
If it is detected that the unit valve status is normal, the main board is displayed as follows and the unit
automatically enters the next commissioning step.
Commissioning Code
Progress Code
Status Code
Meaning
Progress
LED1
LED2
LED3
Code
Display
Status
Code
Display
Status
Code
Display
Status
10_Pre-startup
ODU valve
status
detection
db
On
10
On
OC
On
Outdoor unit valves
have been properly
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.
Commissioning Code
Progress Code
Status Code
Meaning
Progress
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.
Commissioning Code
Progress Code
Status Code
Meaning
Progress
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:

Gree GMV-450WM/B-X Specifications

General

Brand	Gree
Model	GMV-450WM/B-X
Category	Air Conditioner
Language	English