Gree GMV-784WM/H-X - Error Indication and Codes; Unit Error Code Reference

GMV DC Inverter VRF
68
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.
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Error
Code
Content
Error
Code
Content
Indoor
L0
Malfunction of IDU
L1
Protection of indoor fan
L2
Auxiliary heating protection
L3
Water-full protection
L4
Abnormal power supply for wired
controller
L5 Freeze prevention protection
L6
Mode conflict
L7
No main IDU
L8 Power supply is insufficient L9
For single control over multiple units, number
of IDU is inconsistent (HBS network)
LA
For single control over multiple units, IDU
series is inconsistent (HBS network)
LH Alarm due to bad air quality
LC
IDU is not matching with outdoor unit
LL
Malfunction of water flow switch
LE
Rotation speed of EC DC water pump is
abnormal
LF Malfunction of shunt valve setting
LJ
Setting of functional DIP switch code is
wrong
LP Zero-crossing malfunction of PG motor
LU Zero-crossing malfunction of PG motor Lb
For single control over multiple units, IDU is
inconsistent (reheating-dehumidifying
system)
d1 Indoor PCB is poor d2
Malfunction of lower water temperature
sensor of water tank
d3
Malfunction of ambient temperature
sensor
d4 Malfunction of entry-tube temperature sensor
d5
Malfunction of mid-tube temperature
sensor
d6 Malfunction of exit-tube temperature sensor
d7
Malfunction of humidity sensor
d8
Malfunction of water temperature sensor
d9
Malfunction of jumper cap
dA
Web address of IDU is abnormal
dH PCB of wired controller is abnormal dC
Setting capacity of DIP switch code is
abnormal
dL
Malfunction of air outlet temperature
sensor
dE Malfunction of indoor CO
2
sensor
dF
Malfunction of upper water temperature
sensor of water tank
dJ Malfunction of backwater temperature sensor
dP
Malfunction of inlet tube temperature
sensor of generator
dU
Malfunction of drainage pipe temperature
sensor of generator
db Debugging status dd
Malfunction of solar power temperature
sensor
dn
Malfunction of swing parts
dy
Malfunction of water temperature sensor
y1
Malfunction of entry-tube temperature
sensor 2
y2
Malfunction of exit-tube temperature sensor
2
y7
Malfunction of fresh air inlet temperature
sensor
y8 Malfunction of IDU's air box sensor
yA
Malfunction of IFD
o1
Low-voltage protection of IDU's bus bar
o2 High-voltage protection of IDU's bus bar o3 IPM module protection of IDU
o4
Failure startup of IDU
o5
Over-current protection of IDU
o6
Malfunction of current detection circuit of
IDU
o7 Desynchronizing protection of IDU
o8
Communication malfunction of IDU's
driver
o9
Communication malfunction of IDU's main
control