DC Inverter Multi VRF System
29
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
12_ Confirm
debugging
startup
db
On
12
On
AP
Blink
Ready for units to start debugging.
Press main board’s SW7 button to
confirm startup of debugging. 2s
later, main board will display as
below.
db
On
12
On
AE
On
Startup is confirmed. After displaying
for 2s, system will choose
“15_Cooling debugging” or
“16_Heating debugging” according
to ambient temperature. If the
project requests to add refrigerant
but it is not complemented before
debugging, then refrigerant can be
added in this process through the
L-VALVE.
15_ Cooling
debugging
db
On
15
On
AC
On
Debugging for cooling mode. If no
malfunction occurs for 20min when
compressor is running, then system
will start progress 17.
db
On
15
On
Error
code
On
Malfunction occurs when debugging
for cooling mode. After all
malfunctions are eliminated, system
will start next step.
16_ Heating
debugging
db
On
16
On
AH
On
Debugging for heating mode. If no
malfunction occurs for 20min when
compressor is running, then system
will start progress 17.
db
On
16
On
Error
code
On
Malfunction occurs when debugging
for heating mode. After all
malfunctions are eliminated, system
will start next step.
17_ Debugging
finished
00
On
AC/AH
On
OF
On
The entire unit has finished
debugging and under standby-by
condition.
GMV-141WL/C-T
Description of each stage of debugging progress
——
Debugging code
Code meaning and operation method
Progress
LED
Code
Display status
01_Set master unit
A0
ON
System is not debugged, hold main board’s SW3 button for
5s to start debugging.
01
ON
2s later, next step starts.
02_ Allocate
addresses
02/Ad
Display
circularly
System is allocating addresses. 10s later, display as below.
02/L7
Display
circularly
No master indoor unit. Display will be on for 1min, during
which master IDU can be set manually. If not, system will set
the unit with minimum IP address as the master IDU.
02/oC
Display
circularly
Allocation is finished. 2s later, next step starts.
03_ Confirm the
quantity of ODU
03/01
Display
circularly
System is confirming. 1s later, next step starts.
