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If T
-2℃≤T
≤T
set
anp
set
compressor and the outdoor fan will stop 6min later. The indoor fan will stop 30s later. The compressor and
the outdoor fan will run 3.5 min later and the indoor fan will run at low speed. The drying process then will
run periodically as given above.
If T
-2 ,
℃ the system enters stop mode. In this case, the compressor will stop first, and the outdoor
＜T
amb
set
fan will stop after a delay of 15s, and then, the indoor fan will stop after another delay of 15s.
In this mode, the reversal valve will not be powered on and the temperature setting range is
16 ~30
℃
℃
7.2.2.2.2 Protection function
Anti-freezing Protection
If system anti-freezing protection is detected, the compressor will stop, but the outdoor fan will stop after a
delay of 15s. The indoor fan will run at low speed. If the anti-freezing protection is released and the
compressor has stopped for 3 min, the system will resume to original operation mode.
7.2.2.3 heating mode
7.2.2.3.1 The condition and process of heating
If T
+2 , HEAT mode will act
≤T
℃
amb
set
the same time, the indoor fan will run in accordance with anti-cool condition.
If T
+4 , the compressor
≥T
℃
amb
set
reversal valve is still with power on. The indoor fan will stop after running at low fan speed for 30s.
If T
+2℃＜T
＜T
set
amb
set
In this mode, the reversal valve will be powered on and the temperature setting range is 16 ~30
7.2.2.3.2 The condition and process of defrosting
When frost is detected in the condenser, the system will enter into defrosting state. At this time the compressor
continues to run and the outdoor fan, four-way valve and indoor fan will stop running. The run indicator blinks.
When it's detected that defrosting in the condenser is completed, the outdoor fan and four-way valve will run
simultaneously.
+2℃, the drying mode will act. In this case, the indoor fan will run at low speed. The
T
amb
T
+2℃
set
T
-2℃
set
Compressor
Outdoor fan
Indoor fan
Set fan speed
Compressor
Outdoor fan
Indoor fan
. In this case, the compressor, outdoor fan and reversal valve will run at
will firstly stop, and the outdoor fan will stop running 15s later. But the
+4 ,the unit will keep running in the previous mode.
℃
T
+4℃
set
T
+2℃
T
set
Compressor
Outdoor fan
Indoor fan
≤2 min
Reversal valve
6 min
6 min
4 min
4 min
Low speed Low speed
Run
Anti-freezing Protection
≥3 min
Low fan speed
Run
amb
≥6 min
≥3 min
≤2 min
Run
—34—
Cooling running
Dry running
Stop running
Stop
Stop
Stop heating
Original running mode
≥6 min
Start heating
Stop
℃
℃.
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