Error Indication - Gree GMV-224WM/G-X Owner's Manual

7.2 Error Indication

NOTE!
For specific unit fault and maintenance, please refer to the engineering debugging and after-sales
maintenance manual of DC inverter VRF unit.
Error
—
Code
L0
L2
L4
L6
L8
LA
LC
LE
LJ
LU
d1
d3
d5
d7
d9
Indoor
dH
dL
dF
dP
db
dn
y1
y7
yA
o2
o4
o6
o8
oA
oC
Content
Malfunction of IDU
Auxiliary heating protection
Abnormal power supply for wired
controller
Mode conflict
Power supply is insufficient
For single control over multiple
units, IDU series is inconsistent
(HBS network)
IDU is not matching with outdoor
unit
Rotation speed of EC DC water
pump is abnormal
Setting of functional DIP switch
code is wrong
Indoor unit's branch is not
inconsistent for one-to-more unit of
heat recovery system
Indoor PCB is poor
Malfunction of ambient temperature
sensor
Malfunction of mid-tube
temperature sensor
Malfunction of humidity sensor
Malfunction of jumper cap
PCB of wired controller is abnormal
Malfunction of air outlet
temperature sensor
Malfunction of upper water
temperature sensor of water tank
Malfunction of inlet tube
temperature sensor of generator
Debugging status
Malfunction of swing parts
Malfunction of entry-tube
temperature sensor 2
Malfunction of fresh air inlet
temperature sensor
Malfunction of IFD
High-voltage protection of IDU's
bus bar
Failure startup of IDU
Malfunction of current detection
circuit of IDU
Communication malfunction of
IDU's driver
Drive IPM high temperature
protection of IDU
Malfunction of charging loop of IDU
Error
Code
L1 Protection of indoor fan
L3 Water-full protection
L5 Freeze prevention protection
L7 No main IDU
For single control over multiple
L9 units, number of IDU is
inconsistent (HBS network)
LH Alarm due to bad air quality
LL Malfunction of water flow switch
LF Malfunction of shunt valve setting
Zero-crossing malfunction of PG
LP
motor
For single control over multiple
Lb units, IDU is inconsistent
(reheating-dehumidifying system)
Malfunction of lower water
d2
temperature sensor of water tank
Malfunction of entry-tube
d4
temperature sensor
Malfunction of exit-tube
d6
temperature sensor
Malfunction of water temperature
d8
sensor
dA Web address of IDU is abnormal
Setting capacity of DIP switch code
dC
is abnormal
dE Malfunction of indoor CO
Malfunction of backwater
dJ
temperature sensor
Malfunction of drainage pipe
dU
temperature sensor of generator
Malfunction of solar power
dd
temperature sensor
Malfunction of water temperature
dy
sensor
Malfunction of exit-tube
y2
temperature sensor 2
y8 Malfunction of IDU's air box sensor
Low-voltage protection of IDU's
o1
bus bar
o3 IPM module protection of IDU
o5 Over-current protection of IDU
o7 Desynchronizing protection of IDU
Communication malfunction of
o9
IDU's main control
Malfunction of drive temperature
ob
sensor of IDU
o0 Other malfunction of drive
65
GMV DC Inverter VRF
Content
sensor
2