GMV DC Inverter VRF 
67 
Phenomenon  Reason  Measure 
 
 
 
heating 
Door or windows are opened  Close the door or windows 
Direct sunshine  Draw curtain or louver 
Too many people in the room  —— 
Too many heat resources in the room  Reduce heat resources 
Filter is blocked for dirt  Clean the filter 
  NOTE! 
If problem cannot be solved after checking the above items, please contact Gree service center 
and show phenomena and models.   
Following circumstances are not malfunction. 
“Malfunction”  Reason 
Unit doesn't run 
When unit is started immediately after it is just 
turned off 
Overload protection switch makes it run after 
3 minutes delay 
When power is turned on  Standby operating for about 1 minute 
Mist comes from 
the unit 
Under cooling  Indoor high humidity air is cooled rapidly 
Noise is emitted 
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 
and after operating 
That's sound caused by expansion of panel 
and other parts due to temperature change 
The unit blows out 
duct 
When unit runs after no operation for a long 
period 
Dust in indoor unit is blew out 
The unit emits odor
Operating 
The room odor absorbed by the unit is blew 
out again 
after switch off 
After every indoor unit receive "stop" signal, fan 
will keep running 
Indoor fan motor will keep running 20-
70s so 
as to take good use of excess cooling and 
heating and prepare for next operation 
Mode conflict  COOL or HEAT mode can't be operated 
When the indoor operating mode conflicts 
with that of outdoor unit, indoor fault indicator 
will flash and conflict will be shown on the 
wired controller after 5 minutes. 
Indoor unit 
stops to run and meanwhile change outdoor 
operating mode as the same as that of indoor 
unit, then the unit will go back to normal. 
COOL mode doesn't conflict with DRY mode. 
FAN mode doesn't conflict with any mode.