YMGI
•
Your Modern Green Idea
57
Description of each stage of debugging progress
progress
LED1
LED2
LED3
progres
s
LED1
LED2
Meaning
Code
Display
status
code
Display
status
Code
Display
status
11_Calculate
refrigerant
quantity
manually
db
light
11
light
AE
light
Calculate the refrigerant quantity manually and
confirm the perfusion status of refrigerant (the
quantity of refrigerant added into the system
must be recorded accurately).
12_Confirm
debugging
startup
db
light
12
light
AP
blink
Ready for units to start debugging.
db
light
12
light
AE
light
Manual calculation of refrigerant quantity is set
up.
13_
——
——
——
——
——
——
no meaning.
14_
——
——
——
——
——
——
no meaning.
15_Cooling
debugging
db
light
15
light
AC
light
Debugging is enabled in cooling mode
(debugging mode, auto-selected by system).
db
light
15
light
Error
code
light
Error occurs during debugging in cooling mode.
db
light
15
light
J0
light
Error of other modules occurs during debugging
in cooling mode.
db
light
15
light
U9
light
Outdoor pipeline and valves are not normal.
db
light
15
light
XXXX/
U8
light
System detects error in indoor pipeline. XXXX
is the project no. of the faulted IDU. 3s later,
error code U8 is displayed. For example, IDU
no. 100 has U8 error, then LED3 displays like
this: 01 (2s later) 00 (2s later) U8, and repeat
again.
16_Heating
debugging
db
light
16
light
AH
light
Debugging is enabled in heating mode
(debugging mode, auto-selected by system).
db
light
16
light
Error
code
light
Error occurs during debugging in heating mode.
db
light
16
light
J0
light
Error of other modules occurs during debugging
in heating mode.
db
light
16
light
U9
light
Outdoor pipeline and valves are not normal.
db
light
16
light
XXXX/
U8
light
System detects error in indoor pipeline. XXXX
is the project no. of the faulted IDU. 3s later,
error code U8 is displayed. For example, IDU
no. 100 has U8 error, then LED3 displays like
this: 01 (2s later) 00 (2s later) U8, and repeat
again.
17_Debugging
finished
01~04
light
OF
light
OF
light
Debugging is finished. System is on standby
condition. LED1 displays module address.
LED2 and LED3 display “OF”.
