GREE GMV5E DC INVERTER VRF UNITS SERVICE MANUAL
109
If an exception is detected, the unit retains the current status and waits for manual troubleshooting.
Corresponding faults include:
Commissioning Code
Progress Code
Status Code
Meaning
Progress
LED1
LED2
LED3
Code
Display Status
Code
Display Status Code Display Status
05_Internal
communication
detection
db
On
05
On
C2
On
The system detects
communication failure between
master unit and inverter
compressor driver.
db
On
05
On
C3
On
The system detects
communication failure between
master unit and inverter fan
driver.
db
On
05
On
CH
On
The rated capacity ratio is
over-high between indoor and
ODUs.
db
On
05
On
CL
On
The rated capacity ratio is
over-low between indoor and
ODUs.
For details about the above troubleshooting method, refer to the "Troubleshooting Method" part.
Step 11: Unit commissioning step 06 is component detection for ODU.
If no exception is detected, 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
06_Component
detection for ODU
db
On
06
On
OC
On
The system detects that no
ODU component fails and
automatically enters the next
step.
If an exception is detected, the unit retains the current status and waits for manual troubleshooting.
Corresponding faults include:
Commissioning Code
Progress Code
Status Code
Meaning
Progress
LED1
LED2
LED3
Code
Display Status Code Display Status
Code
Display
Status
06_Component
detection for ODU
db
On
06
On
Corresponding
fault code
On
The system detects
component failure of ODU.
For details about the above troubleshooting method, refer to the "Troubleshooting Method" part.
Step 12: Unit commissioning step 07 is component detection for IDU.
If no exception is detected, 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
07_Component
detection for IDU
db
On
07
On
OC
On
The system detects that no
IDU component fails and
automatically enters the next
step.
If an exception is detected, the unit retains the current status and waits for manual troubleshooting.
