D.C. Inverter Multi VRF Modular 
 
60 
Broken fuse or breaker trips off 
Replace fuse or connect breaker 
Insufficient energy of remote controller 
Remote controller is out of control scope 
Control scope is within 8m 
Unit runs but stop 
immediately 
Air intake or outlet of indoor or outdoor unit is 
blocked 
Abnormal cooling 
or heating 
Air intake or outlet of indoor or outdoor unit is 
blocked 
Improper temperature setting 
Adjust setting at wireless remote controller 
or wired controller 
Adjust setting at wireless remote controller 
or wired controller 
Wind direction is not correct 
Adjust setting at wireless remote controller 
or wired controller 
Door or windows are opened 
Close the door or windows 
Too many people in the room 
Too many heat resources in the room 
Filter is blocked for dirt 
Note:   
①
When installing remote monitor or central controller, displacement on indoor units’ project 
codes must be made. Otherwise, there will be collision malfunction of the project codes. 
For detail operation methods, please refer to the GMV5 Installation and Maintenance 
Manual. 
②
If problem can not be solved after checking the above items, please contact Gree service 
center and show phenomena and models.   
Following circumstance are not malfunction. 
When unit is started immediately after it is just 
turned off 
Overload protection switch makes it run 
after 3 minutes delay 
Standby operating for about 1 minute 
Indoor high humidity air is cooled rapidly 
Slight cracking sound is heard when just turned 
on 
It is noise when electronic expansion valve 
initialization 
There is consecutive sound when cooling 
That's sound for gas refrigerant flowing in 
unit 
There is sound when unit starts or stops 
That's sound for gas refrigerant stops to flow 
There is slight and consecutive sound when unit 
is running or after running 
That's sound for operation of drainage 
system 
Cracking sound is heard when unit is operating 
and after operating 
That’s sound caused by expansion of panel 
and other parts due to temperature change 
When unit runs after no operation for a long 
period 
Dust in indoor unit is blew out