Gree GMV5E Series Service Manual page 116

GREE
Commissioning Code
LED1
Progress
Code Display Status Code
12_Unit
commissioning
db
startup
confirmation
Step 18: 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:
Commissioning
Code
LED1
Progress
Display
Code
Status
zDb
Db
Db
15_Cooling
commissioning
operation
Db
Db
Progress Code
LED2
Display Status
On 12
Progress Code
LED2
Display
Code
Status
On 15 On
On 15 On
On 15 On
On 15 On
On 15 On
GMV5E DC INVERTER VRF UNITS SERVICE MANUAL
Status Code
LED3
Code Display Status
On AE
Status Code
LED3
Display
Code
Status
AC On
Corresponding
On
fault code
J0 On
U9 On
XXXX/U8 On
112
Meaning
The unit is set to
manually-calculated refrigerant
On
perfusion commissioning
status.
Meaning
The system is in cooling-mode
commissioning operation (the system
automatically selects the
commissioning operation mode without
needing manual settings).
A fault occurs on the cooling-mode
commissioning operation.
A fault occurs on other modules during
the cooling-mode commissioning
operation.
A fault occurs on ODU pipes.
The system detects pipe failure of IDU.
"XXXX" indicates the project number of
the faulty IDU. The fault code "U8" is
displayed after three seconds. For
example, if a U8 fault occurs on IDU
100, LED3 will circularly display "01",
"00" (two seconds later), and "U8" (two
seconds later).