Table Of Error Codes For Indoor Unit; Troubleshooting - Gree GMV-ND28ZD/A-T Manuel D'utilisateur

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 Control
L9
Indoor Units Setting Error

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
The unit can't start up
The unit stops after
running for a while
Poor cooling effect
Poor heating effect
Copyright 2018. This translation is property of GREE PRODUCTS SL. All rights reserved. Total or partial reproduction without its express authorization is prohibited.
Multi Variable Air Conditioners Floor and Ceiling Type Indoor Unit
Error
Content
Code
LA Indoor Units Incompatibility Error
LH Low Air Quality Warning
LC ODU-IDU Incompatibility Error
d1 Indoor Unit PCB Error
Ambient Temperature Sensor
d3
Error
Inlet Pipe Temperature Sensor
d4
Error
Outlet Pipe Temperature Sensor
d6
Error
d7 Humidity Sensor Error
d8 Water Temperature Sensor Error
Power supply is not connected
①
Circuit breaker tripping caused by leakage of electricity
②
Input voltage is too low
③
Operation button is closed
④
Control loop is abnormal
⑤
There is obstacle in front of the condenser
①
Control loop is abnormal
②
Set the unit in cooling mode when outdoor ambient temperature is higher than
③
43℃
The filter is dirty or blocked
①
Too heavy heat load of room(e.g. too many people)
②
Door or window is open
③
Inlet and outlet of IDU are blocked
④
Setting temperature is too high or refrigerant leaks
⑤
The performance of room temperature sensor is getting worse
⑥
The filter is dirty or blocked
①
Door or window is open
②
Setting temperature is too low
③
Refrigerant leakage
④
Outdoor ambient temperature is lower than -5℃
⑤
Abnormality of control circuit
⑥
20
Error
Code
d9 Jumper Cap Error
Indoor Unit Network Address
dA
Error
dH Wired Controller PCB Error
Capacity DIP Switch Setting
dC
Error
Outlet Air Temperature
dL
Sensor Error
dE Indoor Unit CO
Special Code: Field
db
Debugging Code
C0 Communication Error
AJ Filter Cleaning Reminder
Troubleshooting
Content
Sensor Error
2