Heat Recovery DC Inverter Multi VRF Unit
59
6 Common Malfunction and Troubleshooting
If your air conditioner doesn’t operate normally, please check the following items before
contacting for repair.
Phenomenon
Cause
Measure
The unit doesn’t run
Without power supply
Connect to power supply
Voltage is too low
Check if the voltage is within rating range
Broken fuse or breaker trips off
Replace fuse or connect breaker
Insufficient energy of remote controller
Replace new battery
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
Remove obstruction
Abnormal cooling or
heating
Air intake or outlet of indoor or outdoor
unit is blocked
Remove obstruction
Improper temperature setting
Adjust setting at remote controller or wired
controller
Fan speed is set too low
Adjust setting at remote controller or wired
controller
Wind direction is not correct
Adjust setting at remote controller or wired
controller
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 circumstance 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
starts operation
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
The unit blows out duct
When unit runs after no operation for a
long period
Dust in indoor unit is blew out