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

Page: 95 / 131

DC Inverter Side Discharge VRF
Ⅱ
for North America
93
MAINTENANCE
1 Malfunction List
1.1 Malfunction list for the wired controller
Display
code
Content
Display
code
Content
Display
code
Content
L0
Malfunction of
indoor unit
L9
Wrong number of indoor
unit for one-to-more indoor
unit
d8
Malfunction of water
temperature sensor
L1
Indoor fan
protection
LA
Wrong series for
one-to-more indoor unit
d9 Malfunction of jumper cap
L2
E-heater
protection
LH
Alarming due to bad air
quality
dA
Abnormal address for
indoor unit
L3
Water overflow
protection
LC
The indoor unit model
can’t match with outdoor
unit model
dH
Abnormal PCB for wired
controller
L4
Overcurrent
protection
d1 Poor indoor PCB dC
Abnormal code-dialing
setting of capacity
L5
Freeze prevention
protection
d3
Malfunction of ambient
temperature sensor
dL
Malfunction of air exhause
temperature sensor
L6 Mode shock d4
Malfunction of entry tube
temperature sensor
dE
Malfunction of indoor C02
sensor
L7
No main indoor
unit
d6
Malfunction of exit tube
temperature sensor
C0
Communication
malfunction
L8
Insufficient power
supply
d7
Malfunction of humidity
sensor
AJ Clean alarming for filter
db Special code: engineering debugging code
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 of
f 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
code
Content
Display
code
Content
Display
code
Content
E0
Malfunction of outdoor
unit
E1 High pressure protection E2
Low-temperature
protection for dicharge
E3
Low pressure
protection
E4
Discharge high
temperature protection for
compressor
EC
Loose protection for
discharge temperature
sensor for compressor
1
F0
Poor main board of
outdoor unit
F1
Malfunction of high
pressure sensor
F3
Malfunction of low
pressure sensor
F5
Malfunction of
discharge temperature
sensor for compressor
1
J0 Other module protection J1
Overcurrent protection
for compressor 1
J7
Air-mixing protection
for 4-way valve
J8
High pressure ration
protection of system
J9
Low pressure ratio
protection of system
JL
High pressure is too
low
b1
Malfunction for outdoor
ambient temperature
sensor
b2
Maflunction of
defrosting temperature
sensor 1