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——
Debugging code
Progress
Code
05_ Detect
ODU's
internal
communicati
on and
capacity
ratio
06_ Detect
outdoor
components
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Description of each stage of debugging progress
Progress code
LED1
LED2
Display
Display
Code
status
db
On
05
db
On
05
db
On
05
db
On
05
db
On
06
db
On
06
DC Inverter Multi VRF System User Manual
Status code
LED3
Display
Code
status
status
On
C2
On
On
OC
On
On
CH
On
On
CL
On
error
On
On
code
On
OC
On
28
Code meaning and operation
method
Communication
between
ODU and driver has error. Check
the communication connection of
ODU's main board and drive
When
the
error
board.
eliminated, start next step. If power
is off during troubleshooting, then
restart debugging from progress 01
after power is on.
Communication of master ODU and
driver is normal. Unit will display as
in the left for 2s and detect the
capacity ratio of IDU and ODU. If
the ratio is within range, than next
step will start 2s later. If the ratio is
out of range, unit will display as
below:
Rated capacity ratio of IDU is too
high. Change the combination
way of IDU and ODU to make the
ratio within range. And restart
debugging from progress 01.
Rated capacity ratio of IDU is too
low. Change the combination way
of IDU and ODU to make the ratio
And
within
range.
debugging from progress 01.
Outdoor component's error. LED3
will display the related error code.
After
errors
are
eliminated,
system
will
start
next
automatically. If power is off during
troubleshooting,
then
debugging from progress 01 after
power is on.
System detects no error on outdoor
component. 10s later, next step
starts.
master
is
restart
step
restart
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