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Photovoltaic Multi VRF
——
Debugging code Progress code
LED1
progress
Code
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
——
Debugging code Progress code
LED1
progress
Code
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
LED2
Display
Display
code
status
status
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
Description of each stage of debugging progress
LED2
Display
Display
code
status
status
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 error in indoor
components. XXXX is the project no. of
XXXX
the faulted IDU. 3s later, relevant error
/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 next
OC
light
progress.
Preheat time for compressor is less than
U0
light
8h.
Preheat time for compressor is 8h. Start
OC
light
next progress.
System refrigerant is not enough. System
U4
light
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.
Status code
LED3
Display
Code
status
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 quantity
AE
light
is set up.
——
——
no meaning.
——
——
no meaning.
Debugging is enabled in cooling mode
AC
light
(debugging mode, auto-selected by
system).
Error
Error occurs during debugging in cooling
light
code
mode.
Error of other modules occurs during
J0
light
debugging in cooling mode.
41
Meaning
Meaning
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