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Debugging
——
LED1
Progress
Code
db
db
05_Detect
internal
communication
db
db
db
db
06_Detect
outdoor
components
db
db
07_Detect indoor
components
db
db
08_Confirm
preheated
compressor
db
db
09_Refrigerant
judgments before
startup
db
10_Status
db
judgments of
db
outdoor valves
db
before startup
11_Calculate
refrigerant
db
quantity manually
db
12_Confirm
debugging
db
startup
13_
——
14_
——
db
15_Cooling
debugging
db
db
Description of each stage of debugging progress
Progress code
code
LED2
Display
Display
code
status
status
Light
05
Light
Light
05
Light
Light
05
Light
Light
05
Light
Light
05
Light
Light
06
Light
Light
06
Light
Light
07
Light
Light
07
Light
Light
08
Light
Light
08
Light
Light
09
Light
Light
09
Light
Light
10
Light
Light
10
Light
Light
10
Light
Light
11
Light
Light
12
Light
Light
12
Light
——
——
——
——
——
——
Light
15
Light
Light
15
Light
Light
15
Light
Status code
LED3
Display
Code
status
System detects "driven communication
C2
Light
error between master unit and inverter
compressor".
System detects "driven communication
C3
Light
error between master unit and inverter
fan".
IDU/ODU "high proportion of rated
CH
Light
capacity".
IDU/ODU "low proportion of rated
CL
Light
capacity".
Detection is finished. Start next
OC
Light
progress.
System detects error in outdoor
Error code
Light
components.
No error in outdoor components. Start
OC
Light
next progress.
System detects error in indoor
components. XXXX is the project no. of
the faulted IDU. 3s later, relevant error
XXXX/Error
Light
code is displayed. For example, IDU no.
code
100 has d5 error, then LED3 displays
like this: 01 (2s later) 00 (2s later) d5,
and repeat again.
No error in indoor components. Start
OC
Light
next progress.
Preheat time for compressor is less
U0
Light
than 8h.
Preheat time for compressor is 8h. Start
OC
Light
next progress.
System refrigerant is not enough.
U4
Light
System downtime equilibrium pressure
is lower than 0.3MPa(4-2/5psig).
System refrigerant is normal. Start next
OC
Light
progress.
ON
Light
Outdoor valves are being turned on.
U6
Light
Outdoor valves are not fully turned on.
OC
Light
Outdoor valves are turned on normally.
Calculate the refrigerant quantity
manually and confirm the perfusion
AE
Light
status of refrigerant (the quantity of
refrigerant added into the system must
be recorded accurately).
AP
Blink
Ready for units to start debugging.
Manual calculation of refrigerant
AE
Light
quantity is set up.
——
——
No meaning.
——
——
No meaning.
Debugging is enabled in cooling mode
AC
Light
(debugging mode, auto-selected by
system).
Error occurs during debugging in
Error code
Light
cooling mode.
Error of other modules occurs during
J0
Light
debugging in cooling mode.
41
GMV DC Inverter VRF
Meaning
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