Gree Cooling Bay GVCN18AANK1A1A, Manual

Page: 26 / 73

When T
amb.
> T
preset
+2 , the unit will run under dehumidifying and cooling mode, in which case the
compressor and
℃
outdoor fan will start to run, the indoor fan will run at low
speed.
When T
preset
-2
≤
T
℃
amb.
≤
T
preset
+2 , the unit will run under dehumidifying mode, in which case
the indoor fan will keep
℃
running at low speed, while the compressor and outdoor fan will run 6 minutes and stop 4 minutes so repeated in cycle.
When T
amb
.< T
preset
-2
℃
,
the compressor ,outdoor fan and the indoor fan will stop running.
Under this mode, the switchover valve does not work and the temperature can be set within a range from 16 to 30
℃ ．
6.1.2.3 Heating Mode
6.1.2.3.1 Working Conditions and Process of Heating
Cooling
Dehumidifying
Stop
Stop
Run
low
speed
low
speed
6 min
.
4
min.
Compressor
Outdoor fan
Indoor fan
T
preset
+2
℃
T
preset
-2
℃
T
amb
6.1.2.2.2 Protection Function
Anti-freezing Protection
This protection is the same as that under cooling mode.
Overcurrent Protection
This protection is the same as that under cooling mode.
When T
amb.
≤T
preset
-1 , the unit will run under heating mode, in which case the switchover valve, com
℃
pressor and
outdoor fan will be started, while the indoor fan will run at preset speed.
If T
amb.
≥T
preset
+1 , the compressor and outdoor fan will be stopped, the switchover valve is still energized and the
℃
indoor fan will run at low speed for 10 seconds before it is stopped.
When T
preset
-1 <T
℃
amb.
< T
preset
+1 , the unit will maintain its original operating status.
℃
Under heating mode, the switchover valve is energized and temperature can be set within a range from 16 to 3 0 .
Start
heating
Original operating status
Stop
heating
6 min.
6 min.
3 min.
Setting fan speed
Setting fan speed
Run
Stop
Compressor
Outdoor fan
Indoor fan
Sw
itchover valve
Low
speed
Low
speed
T
preset
+
1
℃
T
preset
-1
℃
amb
℃
When the unit is stopped under heating mode and switches to other modes from heating mode, 4-way valve will be
de-energized in 2 min.
6.1.2.3.2 Conditions and Process of Defrosting
Upon frost in condenser is detected
, the system will enter into defrosting status, in which case the compressor
will
continue to run,
the outdoor fan, 4-way valve and indoor fan will be stopped and the running indicator will blink.
4-way valve will be started , indoor fan wil run at preset speed, the compressor will keep running, and the running
indicator will stop blinking.
Dispay screen displays H1.When it is detected that the frost in condenser is completely eliminated, the outdoor fan,
The first defrost
ing
after energization will last
9
minutes. Later, the defrost time can be adjusted according to
quantity of frost. Defrost
ing
takes longer if more frost (Max. 12 minutes)
.The system will exit defrost mode upon
completion of defrosting.
Cool ing Bay Series
6.2.2.2 Dehumidifying Mode
6.2.2.2.1 Dehumidifying Conditions and Process
２６