Gree GMV-V72W/A-F Owner's Manual page 50

10_
——
11_
——
db
12_Confirm
debugging
db
startup
13_
——
14_
——
db
15_Cooling
debugging
Error
code
db
16_Heating
debugging
Error
code
Display of related error code:
Malfunction Type
ODU malfunction
IDU malfunction
5.2.2.2 Debugging operation mode
Ultra Heat GMV 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 S2 of Technical service manual; Low noise setting method can also
be seen in low noise setting S1 of Technical service manual;
Step 3: Disconnect power for outdoor units and set one module as a master unit. Setting methods
can be seen in Master Unit Setup S7 of Technical service manual
—— —— ——
—— —— ——
Light 12 Blink
Light 12 Light
—— —— ——
—— —— ——
Light 15 Light
Light
Light 16 Light
Light
Error Code(for example)
CC
XXXX/d3
—— ——
—— ——
AE Blink
oC Light
—— ——
—— ——
UC Light
UH Light
Master unit hasn't been set. LED1 will display CC.
XXXX means the project code of IDU with error. 3s
later, d3 will be displayed. For instance, if no.100 IDU
has d3 error, then the LED1 will display circularly as
below: 01(2s later), 00(2s later), d3.
(Set master unit S7 as "00"; Set slave
46
Ultra Heat GMV Multi VRF
No meaning.
No meaning.
Ready for units to start debugging.
The unit starts up in the status of
manual calculation of refrigerant
charging amount.
No meaning.
No meaning.
Debugging for cooling mode.
(Debugging operation mode, the
system will select automatically with
no need of manual setting).
Malfunction occurs when debugging
for cooling mode.
Debugging for heating mode.
(Debugging operation mode, the
system will select automatically with
no need of manual setting).
Malfunction occurs when debugging
for heating mode.
Note