DC Inverter Multi VRF System
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5.2.2 Test Operation and Debugging
Description of test operation procedures and main board display of ODU
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.
04_ Confirm the
quantity of IDU
04/00~16
Display
circularly
“00~16” 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 SW3 button
to confirm. Then the display is as below.
04/oC
Display
circularly
System has confirmed the quantity. 2s later, next step starts.
00~16
Display
circularly
“00~16” displays the quantity of indoor unit identified by the
system.
05_ Detect ODU’s
internal
communication
and capacity ratio
05/C2
Display
circularly
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.
05/oC
Display
circularly
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, then next step will start
2s later. If the ratio is out of range, unit will display as below.
05/CH
Display
circularly
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.
05/CL
Display
circularly
Rated capacity ratio of IDU is too low. Change the
combination way of IDU and ODU to make the ratio within
range. And restart debugging from progress 01.
06_ Detect
outdoor
components
06/error code
Display
circularly
Outdoor component’s error. Besides “06”, the other blinking
will display the related error code. After errors are eliminated,
system will start next step automatically. If power is off during
troubleshooting, then restart debugging from progress 01 after
power is on.
06/oC
Display
circularly
System detects no error on outdoor component. 10s later,
next step starts.
Содержание GMV-12WP/A-T
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