Refer to the temperature level control function  
 
3-1-4. Frost-removing operation 
. The blower stops after 20 seconds 
. When receiving the I21=11 signal from the outdoor unit in the heat frost-removing 
mode, warm boot will be done according to the hear exchange sensor. The wind 
volume control is the same with 3.1.1 
When the frost-removing process if over, if the compressor is on,the wind volume 
control will be warm-booted; if the compressor if switched off, the wind volume will 
be weak. 
3-2 cooling running 
. The wind volume can be set to strong, medium and weak. 
Automatica wind volume function will decide the wind volume according to the 
temperature 
 Picture3.3 
3-3. Moisture removing running 
3-3-1. Compressor off, idle mode for 3 minutes 
. The blower fan stops as the compressor stops 
. The operation is wead after 3 minutes’ idle mode  
. After 3 minutes’ ilde mode, the compressor is on. 
3-3-2. Compressors on   
The compressor operates as the set wind volume when the wind volume is set to 
be strong, medium or weak 
. The wind volume is decided according to the temperature adjusting when the 
wind volume is set to be automatic. 
Picture 3.4 
Moisture removing running 
 
 Level H         3minutes
 idle mode 
CompressorOFF 
 
 
  
 Setting   slightly weak
 OFF        weak                    weak        setting 
4.Powerful Running 
. Powerful running for 15 minutes 
. The running stops or ends the powerful running after 15 minutes 
. The mode switch ends the powerful running 
. Enter into the silent mode, normal running mode or timed switching on mode to 
end the powerful running  
. When in automatic mode, there are powerful and silent functions for your choice. 
When the main unit is in cooling mode, it operates with powerful cooling or silent 
cooling. When the main unit is in heating mode, it operates with powerful heating 
or silent heathing.  When the main unit is in wind-sending mode, there are no 
powerful or silent modes.  
4-0-1. Powerful heating 
29
 
Model:
HSU-12HS03/R2(DB)
HSU-09HS03/R2(DB)Domestic Air Conditioner