GREE U-Match 6 SERIES UNIT SERVICE MANUAL
78
(2) The following situations are not operation failures.
Phenomenon Time of occurrence Cause
Mist comes from the air
conditioner.
During operation.
If the unit is running under high humidity, the
wet air in the room will be quickly cooled
down.
The air conditioner
generates some noise.
System switches to heating mode after
defrosting.
Defrosting process will generate some water,
which will turn to water vapor.
The air conditioner is buzzing at the
beginning of operation.
Temperature controller will be buzzing when it
starts working. The noise will become weak
1min later.
Dust comes from the air
conditioner.
When the unit is turned on, it purrs.
When the system is just started, the refrigerant
is not stable. About 30s later, the purr of the
unit becomes low.
About 20s after the unit first enables the
heating mode or there is refrigerant
brushing sound when defrosting under
heating.
It’s the sound of 4-way valve switching
direction. The sound will disappear after the
valve changes its direction.
There is hissing sound when the unit is
started or stopped and a slight hissing
sound during and after operation.
It’s the sound of gaseous refrigerant that stops
flowing and the sound of drainage system.
There is a sound of crunching during and
after operation.
Because of temperature change, front panel
and other components may be swelled up and
cause abrasion sound.
There is a hissing sound when the unit is
turned on or suddenly stopped during
operation or after defrosting.
Because refrigerant suddenly stops flowing or
changes the flow direction.
The unit starts operation after being unused
for a long time.
Dust inside the indoor unit comes out together
with the air.
The air conditioner
generates some smell.
During operation.
The room smell or the smell of cigarette
comes out through the indoor unit.
NOTICE:
Check the above items and adopt the corresponding corrective measures. If the air conditioner continues
to function poorly, please stop the air conditioner immediately and contact Gree’s authorized local service
center. Ask our professional service staff to check and repair the unit.
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