Malfunction List - Gree GMV-36WL/A-T(U) Manual

DC Inverter Side Discharge VRF Ⅱ for North America
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:
Display
Content
code
Malfunction of outdoor
E0
unit
Low pressure
E3
protection
Poor main board of
F0
outdoor unit
Malfunction of
discharge temperature
F5
sensor for compressor
1
Air-mixing protection
J7
for 4-way valve
High pressure is too
JL
low
Display
Content
code
Wrong number of indoor
L9 unit for one-to-more indoor
unit
Wrong series for
LA
one-to-more indoor unit
Alarming due to bad air
LH
quality
The indoor unit model
can't match with outdoor
LC
unit model
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
sensor
Special code: engineering debugging code
Display
code
E1 High pressure protection
Discharge high
E4 temperature protection for
compressor
Malfunction of high
F1
pressure sensor
J0 Other module protection
High pressure ration
J8
protection of system
Malfunction for outdoor
b1 ambient temperature
93
Display
code
d8
d9
dA
dH
dC
dL
dE
C0
AJ
Display
Content
code
E2
EC
F3
J1
J9
b2
sensor
Content
Malfunction of water
temperature sensor
Malfunction of jumper cap
Abnormal address for
indoor unit
Abnormal PCB for wired
controller
Abnormal code-dialing
setting of capacity
Malfunction of air exhause
temperature sensor
Malfunction of indoor C02
sensor
Communication
malfunction
Clean alarming for filter
Content
Low-temperature
protection for dicharge
Loose protection for
discharge temperature
sensor for compressor
1
Malfunction of low
pressure sensor
Overcurrent protection
for compressor 1
Low pressure ratio
protection of system
Maflunction of
defrosting temperature
sensor 1