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If it's confirmed, press SW7 confirmation button. Unit will display as below and start next
progress.
——
progress
12_Status judgments of
outdoor valves before startup
Step 17: after unit is confirmed to start debugging, system select cooling/heating mode
according to ambient temperature.
A. If cooling mode is selected, relevant display is as below:
——
Debugging code
LED1
progress
Code
db
db
db
15_Cooling
db
debugging
db
B. If heating mode is selected, relevant display is as below:
——
Debugging code
LED1
progress
Code
db
db
16_Heating
debugging
db
db
Debugging code
Progress code
LED1
Display
Code
code
status
db
Light
Progress code
LED2
Display
Display
code
status
status
Light
15
Light
Light
15
Light
Light
15
Light
Light
15
Light
Light
15
Light
Progress code
LED2
Display
Display
code
status
status
Light
16
Light
Light
16
Light
Light
16
Light
Light
16
Light
Status code
LED2
LED3
Display
Code
status
12
Light
AE
Status code
LED3
Display
Code
status
Debugging is enabled in cooling mode
AC
Light
(debugging mode, auto-selected by
system).
Error
Error occurs during debugging in
Light
code
cooling mode.
Error of other modules occurs during
J0
Light
debugging in cooling mode.
Outdoor pipeline and valves are not
U9
Light
normal.
System detects error in indoor pipeline.
XXXX is the project no. of the faulted
IDU. 3s later, error code U8 is
XXXX
Light
displayed. For example, IDU no. 100
/U8
has U8 error, then LED3 displays like
this: 01 (2s later) 00 (2s later) U8, and
repeat again.
Status code
LED3
Display
Code
status
Debugging is enabled in heating mode
AE
Light
(debugging mode, auto-selected by
system).
Error
Error occurs during debugging in
Light
code
heating mode.
Error of other modules occurs during
J0
Light
debugging in heating mode.
Outdoor pipeline and valves are not
U9
Light
normal.
48
Photovoltaic Multi VRF
Meaning
Display
status
Manual calculation of
Light
refrigerant quantity is set
up.
Meaning
Meaning
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