Gree GMV-680WM/E-X Manuel D'utilisateur page 56

GMV DC Inverter VRF
5.2.2.2 Debugging operation mode
GMV5E multi VRF system has two debugging modes: one is 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
button on the master module for at least 5s to enable debugging;
Step 6: Wait. Unit will then start progress 01 and 02; in progress 01, if master unit is not
correctly set, progress 01 will show the following errors:
Debugging
Code
LED1
Progress
Display
Code
status
db light
01_01 Set
up master db light
unit:
db light
According to the above errors, reset the master unit as instructed in Master Unit Setup
SA8_MASTER_S. After reset is finished, start debugging again.
In progress 02, if master IDU is not detected, then progress 02 will show the following
errors:
LED1
Function code Display mode
db light
At this time, all buttons are ineffective. Set master IDU in 1min via debugging software. If
master IDU is not set in 1min, system will set up a master IDU randomly. After that, system will
start next progress.
Step 7: in progress 03, the quantity of modules needs to be confirmed manually. Main
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Progress Code Status Code
LED2 LED3
Display
Code Code
status
01 light CC
01 light CF
01 light OC
LED2
Current
progress
02
53
Meaning
Display
status
System doesn't have master unit. Reset
light
master unit.
More than 2 master units are set. Reset
light
master unit.
Master unit is successfully set. Start next
light
progress.
Display mode Current status
light L7
LED3
Display mode
blink