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7.1.2.3 Heating Mode
When T
≤T
-1 , the unit will run under heating mo
amb.
preset
outdoor fan will be started, while the indoor fan will run at preset speed under preset cold air prevention condition.
If T
≥T
+1 , the compressor and outdoor
℃
amb.
preset
fan will run at low speed for 10 seconds before it is stopped.
When T
-1 <T
℃
preset
amb.
Under heating mode, the temperature can be set within a range from 16 to 30 . The initial value is 25 .
If the unit is switched off under heating mode or switched to another mode, the 4-way valve will be de-energized 2
minutes after the compressor is stopped.
7.1.2.3.1 Cold Air Prevention Condition
The compressor will start at heat mode, indoor fan will not operate. After 5Min or if the outlet temperature is high, the
indoor fan will run at preset speed. The indoor fan will no longer be stopped once it is started. Once running at preset
speed, it will be impossible to change the speed of the indoor fan.
7.1.2.3.2 Defrosting Conditions
When the condenser is detected to have frost, the system will enter into defrosting mode, in which case the 4-way
valve, indoor fan and outdoor fan will be stopped.
When it is detected that the frost in condenser is completely eliminated, the 4-way valve and outdoor fan will be
started simultaneously, while the indoor fan will start to run under preset cold air prevention condition.
7.1.2.4 Fan Mode
Indoor fan will run at preset speed
The temperature can be set within a range from 16 to 30 . The initial value is 25 .
7.1.2.5 Auto Mode
Under this mode, the system will automatically select its run mode (cooling, dehumidifying, heating or fan) depending on
ambient temperature.
Once a mode is started, the unit will run at least 30 seconds before it can run the status of auto mode depending on
ambient temperature.
7.1.3 AUTO ON/OFF and Sleep Function
7.1.3.1 Sleep
If the controller is under cooling or dehumidifying mode, the preset temperature will be increased by 1
after running under sleep mode and will be increased by another 1
by 2
within two hours. After that, the unit will run at this temperature.
℃
℃
< T
+1 , the unit will maintain its original operating status.
℃
preset
T
preset
T
preset
6 min.
Compressor
Outdoor fan
Indoor fan
5 mi n utes
Preset speed
≤
Louver valve
Run
Compressor
Outdoor fan
Indoor fan
Run
Auto Speed
Low Speed
de, in which case the 4-way valve, compressor and
fan will be stopped, the 4-way valve is still energized and the indoor
Ambient temperature T
amb
3 min.
6 min.
5 mi n utes
Preset speed
≤
Stop
≤10 min.
3min.
≤
Preset speed
Stop
Medium Speed High Speed
℃
after two hours. The temperature will increased
℃
－19－
℃
℃
Start cooling
Maintain original operating status
Stop cooling
℃
one hour
℃
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