Malfunction List For The Wired Controller; Status Display Table For Indicators On Main Board Of Outdoor Unit - Gree GMV-24WL/C-T Service Manual

GREE
MAINTENANCE
1 Malfunction List

1.1 Malfunction list for the wired controller

Display
Content
code
Malfunction of
L0
indoor unit
Indoor fan
L1
protection
E-heater
L2
protection
Water overflow
L3
protection
Overcurrent
L4
protection
Freeze prevention
L5
protection
L6 Mode shock
No main indoor
L7
unit
Insufficient power
L8
supply
db

1.2 Status display table for indicators on main board of outdoor unit

Definition:
LED1: It displays "00" for hot water mode as for DC Inverter Side Discharge VRF
LED2: It displays "AC" for AC mode, cooling and cooling OFF mode for indoor unit, and displays
"AH" for heating and heating OFF mode for indoor unit
LED3: It displays on or off status of compressor and malfunction code. It displays "ON" when the
compressor is operating and "OFF" when the compressor stops operation. When there's malfunction for
the unit, it will display corresponding malfunction code; when there're multiple malfunctions, the
malfunction codes will be displayed in turn.
Display code table of outdoor unit is as below:
Content
symbol
Division
symbol
Malfunction of
L
IDU (uniform)
Indoor
d
Display
code
Wrong number of indoor
L9 unit for one-to-more indoor
LA
one-to-more indoor unit
Alarming due to bad air
LH
The indoor unit model can't
LC match with outdoor unit
d1
Malfunction of ambient
d3
Malfunction of entry tube
d4
Malfunction of exit tube
d6
Malfunction of humidity
d7
Special code: engineering debugging code
0 1
Protection of
indoor fan
Indoor PCB is
-
poor
DC Inverter Side Discharge VRF Ⅱ for North America
Content
unit
Wrong series for
quality
model
Poor indoor PCB
temperature sensor
temperature sensor
temperature sensor
sensor
2
Auxiliary
Water-full
heating
protection
protection
Malfunction
of ambient
-
temperature
96
Display
Content
code
Malfunction of water
d8
temperature sensor
d9 Malfunction of jumper cap
Abnormal address for
dA
indoor unit
Abnormal PCB for wired
dH
controller
Abnormal code-dialing
dC
setting of capacity
Malfunction of air exhause
dL
temperature sensor
Malfunction of indoor C02
dE
sensor
Communication
C0
malfunction
AJ Clean alarming for filter
3 4
Over-current
protection
Malfunction
of entry-tube
temperature
sensor sensor
5
Freeze
prevention
protection
Malfunction
of middle
temperature
sensor