Gree GMV-Y72WM/C-F Owner's Manual page 61

Photovoltaic Direct-driven Inverter VRF
Debugging
——
code
LED1
progress
Code
db
db
db
16_Heating
db
debugging
db
17_Debugging 01~0
finished 4
5.2.2.3 Debugging operation mode
Gree Photovoltaic Direct-driven Inverter VRF System
direct operation on main board of outdoor units while the other is PC operation via special
software. In PC software debugging, indoor/outdoor parameters can be displayed and historical
data can be recorded and inquired. (Operation details can be found in relevant instruction
manuals)
(1)Debugging through operation on main board of outdoor units
In this debugging mode, following debugging functions are included on the main board:
Step 1: front panel of the outdoor units must be fully closed. Open the debugging window
of each basic module;
Step 2: disconnect power for outdoor units. According to design requirements of external
static pressure, set up corresponding static pressure mode for the units. Setting methods can
be seen in Outdoor Fan Static Pressure Setup SA6_ESP_S;
Step 3: disconnect power for outdoor units and set one module as a master unit. Setting
methods can be seen in Master Unit Setup SA8_MASTER_S;
Step 4: Connect power for all indoor units. Make sure all IDUs are power on. Then all
outdoor modules will display "Debugging not enabled";
Step 5: Find the module with "01" module address to be the master module. Hold SW7
Description of each stage of debugging progress
Progress code
LED2
Display Display
code
status status
light 16 light
light 16 light
light 16 light
light 16 light
light 16 light
light OF light
Status code
LED3
Display
Code
status
Debugging is enabled in heating
AH light
auto-selected by system).
Error Error occurs during debugging in
light
code
Error of other modules occurs during
J0 light
debugging in heating mode.
Outdoor pipeline and valves are not
U9 light
System detects error in indoor
pipeline. XXXX is the project no. of
the faulted IDU. 3s later, error code
XXXX/
light U8 is displayed. For e xample, IDU no.
U8
100 has U8 error, then LED3 displays
like this: 01 (2s later) 00 (2s later) U8 ,
Debugging is finished. System is on
standby condition. LED1 displays
OF light
module address. LED2 and LED3
has two debugging modes: one is
57
Meaning
mode (debugging mode,
heating mode.
normal.
and repeat again.
display "OF".