Photovoltaic Multi VRF
24
Description of each stage of debugging progress
——
Debugging
code
Progress code
Status code
Code meaning and operation
method
Progress
LED1
LED2
LED3
Code
Display
status
Code
Display
status
Code
Display
status
ODU
db
On
03
On
OC
On
System finishes confirmation.
2s later, next step starts.
04_ Confirm
the quantity of
IDU
db
On
04
On
01~80
Blink
LED3 displays the quantity of
indoor
unit.
Confirm
the
number
manually.
If
the
number is not consistent the
display one, cut off power of
IDU and ODU and check
whether communication wire
of
IDU
is
correctly
connected.
After the check,
connect
power
and
start
debugging from progress 01.
If
the number is then correct,
press main board’s SW7
button to confirm.
Then the
display is as below:
db
On
04
On
OC
On
System has confirmed the
quantity. 2s later, next step
starts.
05_ Detect
ODU’s internal
communication
and capacity
ratio
db
On
05
On
C2
On
Communication
between
master ODU and driver has
error.
Check
the
communication connection
of ODU’s main board and
drive board.
When the error is
eliminated, start next step. If
power
is
off
during
troubleshooting, then restart
debugging from progress 01
after power is on.
db
On
05
On
OC
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:
Summary of Contents for GMV-Y120WL/A-T
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