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GMV DC Inverter VRF
(3) When debugging, the front panel of the outdoor unit must be completely closed, otherwise it
will affect the accuracy of debugging (as shown in the Fig
(4) Display instruction for each stage progress at the time of debugging:
Debugging
—
code
LED1
Progress
Display
Code
db
db
01_set up
master unit
db
db
db
a
02_
llocate
addresses
db
db
03_module
quantity
confirmation
db
db
04_indoor
unit quantity
confirmation
db
db
db
05_detect
internal
communication
db
db
db
Instruction for each stage progress at the time of debugging
Progress code
LED2
Display
Code
status
status
ON
01
ON
ON
01
ON
ON
01
ON
ON
01
ON
ON
02
ON
ON
02
ON
ON
03
ON
ON
03
ON
ON
04
ON
ON
04
ON
ON
05
ON
ON
05
ON
ON
05
ON
ON
05
ON
ON
05
ON
Fig.4.2.2
Status code
LED3
Display
Code
status
A0
ON
Undebugged status.
The system hasn't set master module. It
CC
ON
needs to reset it.
The system has set more than 2 master
CF
ON
modules. It needs to reset it.
Master module setting is succeeded. It will
OC
ON
automatically enter into the next step.
The system is conducting the address
Ad
Flash
assignment.
Address assignment is succeeded. It will
OC
ON
automatically enter into the next step.
LED3 displays the module quantity. It needs to
01~04
Flash
manually confirm the module quantity.
Once the system module quantity is
OC
ON
confirmed, it will automatically enter into the
next step for judgment.
××/ The
quantity
LED3 displays the quantity of online indoor
of online
Flash
units.
indoor
units
Indoor unit's quantity inspection is finished.
OC
ON
Enter into the next step automatically.
The system has detected "communication
C2
ON
malfunction between main control and inverter
compressor driver".
The system has detected "communication
C3
ON
malfunction between main control and inverter
fan driver".
Indoor/outdoor unit's "rated capacity ratio is
CH
ON
too high".
Indoor/outdoor unit's "rated capacity ratio is
CL
ON
too low".
System inspection is finished. Enter into the
OC
ON
next step automatically.
52
as below).
.4.2.2
Meaning
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