GREE GMV5E DC INVERTER VRF UNITS SERVICE MANUAL
111
Commissioning Code
Progress Code
Status Code
Meaning
Progress
LED1
LED2
LED3
Code Display Status Code Display Status Code Display Status
09_Pre-startup
refrigerant
detection
db
On
09
On
U4
On
The system detects insufficient
refrigerants and stops to
balance the pressure lower
than 0.3 MPa.
Step 15: Unit commissioning step 10 is pre-startup ODU valve status detection.
If the master unit is displayed as follows, it indicates that the unit is being enabled.
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
ON
On
Outdoor unit valves are being
opened.
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 16: 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 17: 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.
