Gree GMV-ND07T/A-T(U), Owner'S Manual

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Multi Variable Air Conditioners Cassette Type Indoor Unit
21
7 Table of Error Codes for Indoor Unit
Error
Code
Content
Error
Code
Content
Error
Code
Content
L0 Indoor Unit Error LA
Indoor Units
Incompatibility Error
d9 Jumper Cap Error
L1 Indoor Fan Protection LH Low Air Quality Warning dA
Indoor Unit Network
Address Error
L2 E-heater Protection LC
ODU-IDU Incompatibility
Error
dH
Wired Controller PCB
Error
L3 Water Full Protection d1 Indoor Unit PCB Error dC
Capacity DIP Switch
Setting Error.
L4
Wired Controller Power
Supply Error
d3
Ambient Temperature
Sensor Error
dL
Outlet Air Temperature
Sensor Error
L5 Freeze protection d4
Inlet Pipe Temperature
Sensor Error
dE
Indoor Unit CO
2
Sensor
Error
L7
No Master Indoor Unit
Error
d6
Outlet Pipe Temperature
Sensor Error
dy
Water Temperature
Sensor Error
L8
Power Insufficiency
Protection
d7 Humidity Sensor Error C0 Communication Error
L9
Quantity Of Group
Control Indoor Units
Setting Error
d8 Water Temperature Error AJ Filter Cleaning Reminder
db Special Code: Field Debugging Code
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 Troubleshooting
The unit can’t start
① Power supply is not connected.
②
Circuit breaker tripping caused by leakage of electricity.
③ Input voltage is too low.
④ Defect of main PC-board.
The unit stops after running
for a while.
①
The inlet or outlet of ODU or IDU are blocked by obstacle.
Poor cooling effect
①
The filter is dirty.
②
Too heavy heat load of room(e.g. too many people)
③ Door or windows is open.
④
Inlet and outlet of IDU are blocked.
⑤ Setting temperature is too high.
⑥
Refrigerant is insufficient (e.g. refrigerant leakage)
Poor heating effect
①
The filter is dirty.
②
Door or window is open.
③ Setting temperature is too low.
④
Refrigerant is insufficient (e.g. refrigerant leakage)
Indoor fan doesn’t start
up during heating
① At starting, the IDU fan could not operate till the heat exchange become hot,
for preventing delivering the cool air.
②
At defrosting, the IDU fan stopped due to system switch to cooling mode. For
preventing delivering the cool air, and resume operating after defrosting.
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.