Troubleshooting - Gree GMV-NX140P/A(X1.2)-K Owner's Manual

Error
Content
Code
Power Insufficiency
L8
Protection
Quantity Of Group
L9 Control Indoor Units
Setting Error
High bus bar
o2 voltage of indoor
unit
Overcurrent
o5 Protection of Indoor
Unit
Communication
o8 Malfunction of
Indoor Unit's Drive
Malfunction of
Temperature
ob
Sensor of Indoor
Unit's Module
db

8 Troubleshooting

If your air conditioner is not working well, please check the following table first before asking for
service:
Phenomenon
The unit can't start
The unit stops after running for a
while
Poor cooling effect
Poor heating effect
Indoor fan doesn't start
up during 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 Fresh Air Series Indoor Unit
Error
Code
d7
d8 Water Temperature Error
IPM Module Protection of
o3
Current Detection Circuit
o6
Malfunction of Indoor Unit
o9 Malfunction of Main Mater
oC
Malfunction of Indoor Unit
Special Code: Field Debugging Code
①Power supply is not connected.
②Circuit breaker tripping caused by leakage of electricity.
③Input voltage is too low.
④Operation button is off.
⑤Error of control loop.
①There is obstacle in front of condenser.
②Error of control loop.
③Perform cooling when outdoor ambient temperature is higher than 43℃.
①The filter is dirty or blocked.
②Too heavy heat load of room(e.g. too many people).
③Door or windows is open.
④Air inlet and outlet of IDU are blocked.
⑤Set temperature is too high or refrigerant leaks.
⑥The performance of room temperature sensor gets worse.
①The filter is dirty or blocked.
②Door or window is open.
③Set temperature is too low.
④Refrigerant leaks.
⑤Outdoor ambient temperature is lower than -5℃.
⑥Error of control circuit.
①Position of tube temperature sensor is improper.
②Tube temperature sensor is not inserted well.
③Wiring of tube temperature sensor breaks off.
④Electrical leakage of capacitor.
Content
Humidity Sensor Error
Indoor Unit
Communication
of Indoor Unit
Charging Circuit
Troubleshooting
26
Error
Content
Code
Filter Cleaning
AJ
Reminder
Low bus bar voltage of
o1
indoor unit
Failure Startup of Indoor
o4
Unit
Desynchronizing
o7
Protection of Indoor Unit
High temperature of
oA
Indoor Unit's Module
o0 Other Drive Malfunction