Malfunction List For The Wired Controller; Status Display Table For Indicators On Main Board Of Outdoor Unit - GREE ELECTRIC GMV-120WL/A-T Service Manual

No. Debugging project
Communication
15
paraters
16 Drainage syste
17 Other
2 Malfunction List

2.1 Malfunction list for the wired controller

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

2.2 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:
Display
Content
code
Malfunction of
E0
outdoor unit
DC Inverter Multi VRF System II Service Manual
Parameters
Unit
name
of indoor
electrocnic
expansion
valve
Communication
—
data
—— —
——
Display
code
Wrong number of indoor
L9 unit for one-to-more indoor
Wrong series for
LA
one-to-more indoor unit
Alarming due to bad air
LH
The indoor unit model can't
LC match with outdoor unit
d1 Poor indoor PCB
Malfunction of ambient
d3
temperature sensor
Malfunction of entry tube
d4
temperature sensor
Malfunction of exit tube
d6
temperature sensor
Malfunction of humidity
d7
Special code: engineering debugging code
Display
code
E1 High pressure protection
Reference value
expansion valve is adjusted among 70~480PLS.
Under heating mode, the opening angle for indoor unit is
adjusted among 40~480PLS.
Through debugging software, it detected that the quantity of
indoor unit is same with the enginerring actural quantity.
There's no communication malfunction.
Water can be drained smoothly for indoor unit; Outdoor unit
can drain water fromo drainage pipe completely.
Display
Content
code
unit
quality
model
sensor
Content
64
Content
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
C0 Communication malfunction
AJ Clean alarming for filter
Display
Content
code
Low-temperature
E2
protection for dicharge