Debugging Of Unit - Gree GMV-24WL/C-T Service Manual

GREE

8.2 Debugging of unit

Description of test operation procedures and main board display of ODU
GMV-24WL/C-T(U)
GMV-60WL/C-T(U)：
-
Progress
01_Set master
unit
02_ Allocate
addresses
03_ Confirm the
quantity of ODU
04/00～16
04_ Confirm the
quantity of IDU
00～16/CL
05_ Detect ODU's
internal
communication
and capacity ratio
06/error code
06_ Detect
outdoor
components
、 GMV-28WL/C-T(U) 、 GMV-36WL/C-T(U) 、 GMV-48WL/C-T(U) 、
Description of each stage of debugging progress
Debugging code
LED
Code Display status
A0 ON
01 ON
Display
02/Ad
circularly
Display
02/L7
circularly
Display
02/oC
circularly
Display
03/01
circularly
Display
circularly
Display
04/oC
circularly
Display
circularly
Display
05/C2
circularly
Display
05/oC
circularly
Display
05/CH
circularly
Display
05/CL
circularly
Display
circularly
Display
06/oC
circularly
DC Inverter Side Discharge VRF Ⅱ for North America
Code meaning and operation method
System is not debugged, hold main board's SW3 button for 5s
to start debugging.
2s later, next step starts.
System is allocating addresses. 10s later, display as below:
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.
Allocation is finished. 2s later, next step starts.
System is confirming. 1s later, next step starts.
"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:
System has confirmed the quantity. 2s later, next step starts.
"00～16" displays the quantity of indoor unit identified by the
system. "CL" means the amount of indoor unit is very little
(amount of indoor unit＜2), at this moment, all buttons are
invalid, the system cannot enter into the next judgment.
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.
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 within range. And
restart debugging from progress 01.
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.
System detects no error on outdoor component. 10s later, next
step starts.
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