Gree GMV-ND18PLS/C-T - Malfunction Codes of IDU; Troubleshooting

Multi Variable Air Conditioners Duct Type Indoor Unit
24
7 Malfunction Codes of IDU
Error
Code
Content
Error
Code
Content
Error
Code
Content
L0 Indoor Unit Error L9
Quantity Of Group Control
Indoor Units Setting Error
d7 Humidity Sensor Error
L1 Indoor Fan Protection LA
Indoor Units Incompatibility
Error
d8
Water Temperature Sensor
Error
L2 E-heater Protection LH Low Air Quality Warning d9 Jumper Cap Error
L3 Water Full Protection LC
Outdoor-Indoor
Incompatibility Error
dA
Indoor Unit
Hardware Address Error
L4
Wired Controller Power
Supply Error
d1
Indoor Unit Circuit Board
Error
dH
Wired Controller Circuit Board
Error
L5 Anti-freezing Protection d3
Ambient Temperature
Sensor Error
dC
Capacity DIP Switch Setting
Error
L7 No Master Indoor Unit Error d4
Inlet Pipe Temperature
Sensor Error
dL
Outlet Air Temperature
Sensor Error
L8
Power Insufficiency
Protection
d6
Outlet Pipe Temperature
Sensor Error
dE
Indoor Unit CO
2
Sensor
Error
o1 Over low voltage of IDU bus o2
Over high voltage of IDU
bus
o3 IDU IPM module protection
o4 IDU startup failure o5 IDU overcurrent protection o6
IDU current detecting circuit
error
o7
IDU non-synchronism
protection
o8
IDU drive communication
error
o9
Communication error of IDU
master controller
oA
Over high temperature of IDU
module
ob
Temperature sensor error of
IDU module
oC IDU charging circuit error
o0 Other drive error db
Special Code:
Field Debugging Code
— —
8 Troubleshooting
If your air conditioner is not working well, please check the following table first before asking for
service:
NOTICE:
If air conditioner still fails to work normally after checking and handling as described above, please
stop using it immediately and contact local service center for assistance.
Phenomenon Troubleshooting
The unit can’t start
Power supply is not connected.
Circuit breaker tripping caused by leakage of electricity.
Input voltage is too low.
Defect of main PC-board.
The unit stops after running
for a while
The inlet or outlet of ODU or IDU is blocked by obstacle.
Poor cooling effect
The filter is dirty.
Too heavy heat load of room (e.g. too many people).
Door or windows is open.
Inlet and outlet of IDU are blocked.
Setting temperature is too high.
Refrigerant is insufficient (e.g. refrigerant leakage).
Poor heating effect
The filter is dirty.
Door or window is open.
Setting temperature is too low.
Refrigerant is insufficient (e.g. refrigerant leakage).
Indoor fan doesn’t start
up during heating
At starting, the IDU fan could not operate till the heat exchange become hot, for
preventing delivering the cool air.
At defrostin
g, the IDU fan stopped due to system switch to cooling mode for
preventing delivering the cool air, and resume operating after defrosting.