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——
Debugging code Progress code
LED1
progress
Code
db
db
db
db
db
16_Heating
debugging
db
db
17_Debugging
01~04
finished
5.2.2.2 Debugging operation mode
Photovoltaic 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";
Description of each stage of debugging progress
LED2
Display
Display
code
status
status
light
15
light
light
15
light
light
16
light
light
16
light
light
16
light
light
16
light
light
16
light
light
OF
light
Status code
LED3
Display
Code
status
Outdoor pipeline and valves are not
U9
light
normal.
System detects error in indoor pipeline.
XXXX is the project no. of the faulted
XXXX/
IDU. 3s later, error code U8 is displayed.
light
U8
For example, IDU no. 100 has U8 error,
then LED3 displays like this: 01 (2s later)
00 (2s later) U8, and repeat again.
Debugging is enabled in heating mode
AH
light
(debugging mode, auto-selected by
system).
Error
Error occurs during debugging in heating
light
code
mode.
Error of other modules occurs during
J0
light
debugging in heating mode.
Outdoor pipeline and valves are not
U9
light
normal.
System detects error in indoor pipeline.
XXXX is the project no. of the faulted
XXXX/
IDU. 3s later, error code U8 is displayed.
light
U8
For example, IDU no. 100 has U8 error,
then LED3 displays like this: 01 (2s later)
00 (2s later) U8, and repeat again.
Debugging is finished. System is on
OF
light
standby condition. LED1 displays module
address. LED2 and LED3 display "OF".
42
Photovoltaic Multi VRF
Meaning
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