Table Of Error Codes For Indoor Unit; Troubleshooting - Gree GMV-ND22TD/A-T Owner's Manual

7 Table of Error Codes for Indoor Unit

Error
Content
Code
L0 Indoor Unit Error
L1 Indoor Fan Protection
L2 E-heater Protection
L3 Water Full Protection
Wired Controller Power
L4
Supply Error
L5 Freeze protection
No Master Indoor Unit
L7
Error
Power Insufficiency
L8
Protection
Quantity Of Group
L9 Control Indoor Units
Setting Error
db

8 Troubleshooting

The air conditioner is not expected to be serviced by users. Incorrect repair may cause
electric shock or fire, so please contact an authorized service center for professional service. The
following checks prior to contact may save your time and money.
Phenomenon
① Power supply is not connected.
② Circuit breaker tripping caused by leakage of electricity.
The unit can't start
③ Input voltage is too low.
④ Defect of main PC-board.
The unit stops after
running for a while.
① The filter is dirty.
② Too heavy heat load of room(e.g. too many people)
③ Door or windows is open.
Poor cooling effect
④ Inlet and outlet of IDU are blocked.
⑤ Setting temperature is too high.
⑥ Refrigerant is insufficient (e.g. refrigerant leakage)
① The filter is dirty.
② Door or window is open.
Poor heating effect
③ Setting temperature is too low.
④ Refrigerant is insufficient (e.g. refrigerant leakage).
① At starting, the IDU fan could not operate till the heat exchange become hot, for
Indoor fan doesn't
start up during
② At defrosting, the IDU fan stopped due to system switch to cooling mode. For
heating
Note:
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.
Multi Variable Air Conditioners One-way Cassette Type Indoor Unit
Error
Code
Indoor Units
LA
Incompatibility Error
LH Low Air Quality Warning
ODU-IDU Incompatibility
LC
Error
d1 Indoor Unit PCB Error
Ambient Temperature
d3
Sensor Error
Inlet Pipe Temperature
d4
Sensor Error
Outlet Pipe Temperature
d6
Sensor Error
d7 Humidity Sensor Error
Water Temperature
d8
Error
Special Code: Field Debugging Code
The inlet or outlet of ODU or IDU are blocked by obstacle.
preventing delivering the cool air.
preventing delivering the cool air, and resume operating after defrosting.
Error
Content
Code
Troubleshooting
20
Content
d9 Jumper Cap Error
Indoor Unit Network
dA
Address Error
Wired Controller PCB
dH
Error
Capacity DIP Switch
dC
Setting Error.
Outlet Air Temperature
dL
Sensor Error
Indoor Unit CO2 Sensor
dE
Error
Water Temperature
dy
Sensor Error
C0 Communication Error
AJ Filter Cleaning Reminder